21238560

素因数分解:

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

素因数の和:85

約数の個数: 288

約数和(自身を含む): 86486400

約数和(自身を除く): 65247840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 43, 45, 48, 49, 56, 60, 63, 70, 72, 80, 84, 86, 90, 96, 98, 105, 112, 120, 126, 129, 140, 144, 147, 160, 168, 172, 180, 196, 210, 215, 224, 240, 245, 252, 258, 280, 288, 294, 301, 315, 336, 343, 344, 360, 387, 392, 420, 430, 441, 480, 490, 504, 516, 560, 588, 602, 630, 645, 672, 686, 688, 720, 735, 774, 784, 840, 860, 882, 903, 980, 1008, 1029, 1032, 1120, 1176, 1204, 1260, 1290, 1372, 1376, 1440, 1470, 1505, 1548, 1568, 1680, 1715, 1720, 1764, 1806, 1935, 1960, 2016, 2058, 2064, 2107, 2205, 2352, 2408, 2520, 2580, 2709, 2744, 2940, 3010, 3087, 3096, 3360, 3430, 3440, 3528, 3612, 3870, 3920, 4116, 4128, 4214, 4410, 4515, 4704, 4816, 5040, 5145, 5160, 5418, 5488, 5880, 6020, 6174, 6192, 6321, 6860, 6880, 7056, 7224, 7740, 7840, 8232, 8428, 8820, 9030, 9632, 10080, 10290, 10320, 10535, 10836, 10976, 11760, 12040, 12348, 12384, 12642, 13545, 13720, 14112, 14448, 14749, 15435, 15480, 16464, 16856, 17640, 18060, 18963, 20580, 20640, 21070, 21672, 23520, 24080, 24696, 25284, 27090, 27440, 28896, 29498, 30870, 30960, 31605, 32928, 33712, 35280, 36120, 37926, 41160, 42140, 43344, 44247, 48160, 49392, 50568, 54180, 54880, 58996, 61740, 61920, 63210, 67424, 70560, 72240, 73745, 75852, 82320, 84280, 86688, 88494, 94815, 98784, 101136, 108360, 117992, 123480, 126420, 132741, 144480, 147490, 151704, 164640, 168560, 176988, 189630, 202272, 216720, 221235, 235984, 246960, 252840, 265482, 294980, 303408, 337120, 353976, 379260, 433440, 442470, 471968, 493920, 505680, 530964, 589960, 606816, 663705, 707952, 758520, 884940, 1011360, 1061928, 1179920, 1327410, 1415904, 1517040, 1769880, 2123856, 2359840, 2654820, 3034080, 3539760, 4247712, 5309640, 7079520, 10619280, 21238560]

約数ペア:

[(1, 21238560), (2, 10619280), (3, 7079520), (4, 5309640), (5, 4247712), (6, 3539760), (7, 3034080), (8, 2654820), (9, 2359840), (10, 2123856), (12, 1769880), (14, 1517040), (15, 1415904), (16, 1327410), (18, 1179920), (20, 1061928), (21, 1011360), (24, 884940), (28, 758520), (30, 707952), (32, 663705), (35, 606816), (36, 589960), (40, 530964), (42, 505680), (43, 493920), (45, 471968), (48, 442470), (49, 433440), (56, 379260), (60, 353976), (63, 337120), (70, 303408), (72, 294980), (80, 265482), (84, 252840), (86, 246960), (90, 235984), (96, 221235), (98, 216720), (105, 202272), (112, 189630), (120, 176988), (126, 168560), (129, 164640), (140, 151704), (144, 147490), (147, 144480), (160, 132741), (168, 126420), (172, 123480), (180, 117992), (196, 108360), (210, 101136), (215, 98784), (224, 94815), (240, 88494), (245, 86688), (252, 84280), (258, 82320), (280, 75852), (288, 73745), (294, 72240), (301, 70560), (315, 67424), (336, 63210), (343, 61920), (344, 61740), (360, 58996), (387, 54880), (392, 54180), (420, 50568), (430, 49392), (441, 48160), (480, 44247), (490, 43344), (504, 42140), (516, 41160), (560, 37926), (588, 36120), (602, 35280), (630, 33712), (645, 32928), (672, 31605), (686, 30960), (688, 30870), (720, 29498), (735, 28896), (774, 27440), (784, 27090), (840, 25284), (860, 24696), (882, 24080), (903, 23520), (980, 21672), (1008, 21070), (1029, 20640), (1032, 20580), (1120, 18963), (1176, 18060), (1204, 17640), (1260, 16856), (1290, 16464), (1372, 15480), (1376, 15435), (1440, 14749), (1470, 14448), (1505, 14112), (1548, 13720), (1568, 13545), (1680, 12642), (1715, 12384), (1720, 12348), (1764, 12040), (1806, 11760), (1935, 10976), (1960, 10836), (2016, 10535), (2058, 10320), (2064, 10290), (2107, 10080), (2205, 9632), (2352, 9030), (2408, 8820), (2520, 8428), (2580, 8232), (2709, 7840), (2744, 7740), (2940, 7224), (3010, 7056), (3087, 6880), (3096, 6860), (3360, 6321), (3430, 6192), (3440, 6174), (3528, 6020), (3612, 5880), (3870, 5488), (3920, 5418), (4116, 5160), (4128, 5145), (4214, 5040), (4410, 4816), (4515, 4704)]