31388280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:154

約数の個数: 256

約数和(自身を含む): 121651200

約数和(自身を除く): 90262920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 43, 44, 55, 56, 60, 66, 70, 77, 79, 84, 86, 88, 105, 110, 120, 129, 132, 140, 154, 158, 165, 168, 172, 210, 215, 220, 231, 237, 258, 264, 280, 301, 308, 316, 330, 344, 385, 395, 420, 430, 440, 462, 473, 474, 516, 553, 602, 616, 632, 645, 660, 770, 790, 840, 860, 869, 903, 924, 946, 948, 1032, 1106, 1155, 1185, 1204, 1290, 1320, 1419, 1505, 1540, 1580, 1659, 1720, 1738, 1806, 1848, 1892, 1896, 2212, 2310, 2365, 2370, 2408, 2580, 2607, 2765, 2838, 3010, 3080, 3160, 3311, 3318, 3397, 3476, 3612, 3784, 4345, 4424, 4515, 4620, 4730, 4740, 5160, 5214, 5530, 5676, 6020, 6083, 6622, 6636, 6794, 6952, 7095, 7224, 8295, 8690, 9030, 9240, 9460, 9480, 9933, 10191, 10428, 11060, 11352, 12040, 12166, 13035, 13244, 13272, 13588, 14190, 16555, 16590, 16985, 17380, 18060, 18249, 18920, 19866, 20382, 20856, 22120, 23779, 24332, 26070, 26488, 27176, 28380, 30415, 33110, 33180, 33970, 34760, 36120, 36498, 37367, 39732, 40764, 47558, 48664, 49665, 50955, 52140, 56760, 60830, 66220, 66360, 67940, 71337, 72996, 74734, 79464, 81528, 91245, 95116, 99330, 101910, 104280, 112101, 118895, 121660, 132440, 135880, 142674, 145992, 149468, 182490, 186835, 190232, 198660, 203820, 224202, 237790, 243320, 261569, 285348, 298936, 356685, 364980, 373670, 397320, 407640, 448404, 475580, 523138, 560505, 570696, 713370, 729960, 747340, 784707, 896808, 951160, 1046276, 1121010, 1307845, 1426740, 1494680, 1569414, 2092552, 2242020, 2615690, 2853480, 3138828, 3923535, 4484040, 5231380, 6277656, 7847070, 10462760, 15694140, 31388280]

約数ペア:

[(1, 31388280), (2, 15694140), (3, 10462760), (4, 7847070), (5, 6277656), (6, 5231380), (7, 4484040), (8, 3923535), (10, 3138828), (11, 2853480), (12, 2615690), (14, 2242020), (15, 2092552), (20, 1569414), (21, 1494680), (22, 1426740), (24, 1307845), (28, 1121010), (30, 1046276), (33, 951160), (35, 896808), (40, 784707), (42, 747340), (43, 729960), (44, 713370), (55, 570696), (56, 560505), (60, 523138), (66, 475580), (70, 448404), (77, 407640), (79, 397320), (84, 373670), (86, 364980), (88, 356685), (105, 298936), (110, 285348), (120, 261569), (129, 243320), (132, 237790), (140, 224202), (154, 203820), (158, 198660), (165, 190232), (168, 186835), (172, 182490), (210, 149468), (215, 145992), (220, 142674), (231, 135880), (237, 132440), (258, 121660), (264, 118895), (280, 112101), (301, 104280), (308, 101910), (316, 99330), (330, 95116), (344, 91245), (385, 81528), (395, 79464), (420, 74734), (430, 72996), (440, 71337), (462, 67940), (473, 66360), (474, 66220), (516, 60830), (553, 56760), (602, 52140), (616, 50955), (632, 49665), (645, 48664), (660, 47558), (770, 40764), (790, 39732), (840, 37367), (860, 36498), (869, 36120), (903, 34760), (924, 33970), (946, 33180), (948, 33110), (1032, 30415), (1106, 28380), (1155, 27176), (1185, 26488), (1204, 26070), (1290, 24332), (1320, 23779), (1419, 22120), (1505, 20856), (1540, 20382), (1580, 19866), (1659, 18920), (1720, 18249), (1738, 18060), (1806, 17380), (1848, 16985), (1892, 16590), (1896, 16555), (2212, 14190), (2310, 13588), (2365, 13272), (2370, 13244), (2408, 13035), (2580, 12166), (2607, 12040), (2765, 11352), (2838, 11060), (3010, 10428), (3080, 10191), (3160, 9933), (3311, 9480), (3318, 9460), (3397, 9240), (3476, 9030), (3612, 8690), (3784, 8295), (4345, 7224), (4424, 7095), (4515, 6952), (4620, 6794), (4730, 6636), (4740, 6622), (5160, 6083), (5214, 6020), (5530, 5676)]