640696560

素因数分解:

$2^4\times 3^1\times 5^1\times 7^3\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:261

約数の個数: 320

約数和(自身を含む): 2383180800

約数和(自身を除く): 1742484240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 43, 48, 49, 56, 60, 70, 80, 84, 86, 98, 105, 112, 120, 129, 140, 147, 168, 172, 181, 196, 210, 215, 240, 245, 258, 280, 294, 301, 336, 343, 344, 362, 392, 420, 430, 490, 516, 543, 560, 588, 602, 645, 686, 688, 724, 735, 784, 840, 860, 903, 905, 980, 1029, 1032, 1086, 1176, 1204, 1267, 1290, 1372, 1448, 1470, 1505, 1680, 1715, 1720, 1806, 1810, 1960, 2058, 2064, 2107, 2172, 2352, 2408, 2534, 2580, 2715, 2744, 2896, 2940, 3010, 3430, 3440, 3612, 3620, 3801, 3920, 4116, 4214, 4344, 4515, 4816, 5068, 5145, 5160, 5430, 5488, 5880, 6020, 6321, 6335, 6860, 7224, 7240, 7602, 7783, 8232, 8428, 8688, 8869, 9030, 10136, 10290, 10320, 10535, 10860, 11760, 12040, 12642, 12670, 13720, 14448, 14480, 14749, 15204, 15566, 16464, 16856, 17738, 18060, 19005, 20272, 20580, 21070, 21720, 23349, 24080, 25284, 25340, 26607, 27440, 29498, 30408, 31132, 31605, 33712, 35476, 36120, 38010, 38915, 41160, 42140, 43440, 44247, 44345, 46698, 50568, 50680, 53214, 54481, 58996, 60816, 62083, 62264, 63210, 70952, 72240, 73745, 76020, 77830, 82320, 84280, 88494, 88690, 93396, 101136, 101360, 106428, 108962, 116745, 117992, 124166, 124528, 126420, 133035, 141904, 147490, 152040, 155660, 163443, 168560, 176988, 177380, 186249, 186792, 212856, 217924, 221235, 233490, 235984, 248332, 252840, 266070, 272405, 294980, 304080, 310415, 311320, 326886, 353976, 354760, 372498, 373584, 381367, 425712, 435848, 442470, 466980, 496664, 505680, 532140, 544810, 589960, 620830, 622640, 653772, 707952, 709520, 744996, 762734, 817215, 871696, 884940, 931245, 933960, 993328, 1064280, 1089620, 1144101, 1179920, 1241660, 1307544, 1489992, 1525468, 1634430, 1769880, 1862490, 1867920, 1906835, 2128560, 2179240, 2288202, 2483320, 2615088, 2669569, 2979984, 3050936, 3268860, 3539760, 3724980, 3813670, 4358480, 4576404, 4966640, 5339138, 5720505, 6101872, 6537720, 7449960, 7627340, 8008707, 9152808, 10678276, 11441010, 13075440, 13347845, 14899920, 15254680, 16017414, 18305616, 21356552, 22882020, 26695690, 30509360, 32034828, 40043535, 42713104, 45764040, 53391380, 64069656, 80087070, 91528080, 106782760, 128139312, 160174140, 213565520, 320348280, 640696560]

約数ペア:

[(1, 640696560), (2, 320348280), (3, 213565520), (4, 160174140), (5, 128139312), (6, 106782760), (7, 91528080), (8, 80087070), (10, 64069656), (12, 53391380), (14, 45764040), (15, 42713104), (16, 40043535), (20, 32034828), (21, 30509360), (24, 26695690), (28, 22882020), (30, 21356552), (35, 18305616), (40, 16017414), (42, 15254680), (43, 14899920), (48, 13347845), (49, 13075440), (56, 11441010), (60, 10678276), (70, 9152808), (80, 8008707), (84, 7627340), (86, 7449960), (98, 6537720), (105, 6101872), (112, 5720505), (120, 5339138), (129, 4966640), (140, 4576404), (147, 4358480), (168, 3813670), (172, 3724980), (181, 3539760), (196, 3268860), (210, 3050936), (215, 2979984), (240, 2669569), (245, 2615088), (258, 2483320), (280, 2288202), (294, 2179240), (301, 2128560), (336, 1906835), (343, 1867920), (344, 1862490), (362, 1769880), (392, 1634430), (420, 1525468), (430, 1489992), (490, 1307544), (516, 1241660), (543, 1179920), (560, 1144101), (588, 1089620), (602, 1064280), (645, 993328), (686, 933960), (688, 931245), (724, 884940), (735, 871696), (784, 817215), (840, 762734), (860, 744996), (903, 709520), (905, 707952), (980, 653772), (1029, 622640), (1032, 620830), (1086, 589960), (1176, 544810), (1204, 532140), (1267, 505680), (1290, 496664), (1372, 466980), (1448, 442470), (1470, 435848), (1505, 425712), (1680, 381367), (1715, 373584), (1720, 372498), (1806, 354760), (1810, 353976), (1960, 326886), (2058, 311320), (2064, 310415), (2107, 304080), (2172, 294980), (2352, 272405), (2408, 266070), (2534, 252840), (2580, 248332), (2715, 235984), (2744, 233490), (2896, 221235), (2940, 217924), (3010, 212856), (3430, 186792), (3440, 186249), (3612, 177380), (3620, 176988), (3801, 168560), (3920, 163443), (4116, 155660), (4214, 152040), (4344, 147490), (4515, 141904), (4816, 133035), (5068, 126420), (5145, 124528), (5160, 124166), (5430, 117992), (5488, 116745), (5880, 108962), (6020, 106428), (6321, 101360), (6335, 101136), (6860, 93396), (7224, 88690), (7240, 88494), (7602, 84280), (7783, 82320), (8232, 77830), (8428, 76020), (8688, 73745), (8869, 72240), (9030, 70952), (10136, 63210), (10290, 62264), (10320, 62083), (10535, 60816), (10860, 58996), (11760, 54481), (12040, 53214), (12642, 50680), (12670, 50568), (13720, 46698), (14448, 44345), (14480, 44247), (14749, 43440), (15204, 42140), (15566, 41160), (16464, 38915), (16856, 38010), (17738, 36120), (18060, 35476), (19005, 33712), (20272, 31605), (20580, 31132), (21070, 30408), (21720, 29498), (23349, 27440), (24080, 26607), (25284, 25340)]