72135440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{499}}^1$

素因数の和:664

約数の個数: 80

約数和(自身を含む): 182280000

約数和(自身を除く): 110144560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 139, 208, 260, 278, 499, 520, 556, 695, 998, 1040, 1112, 1390, 1807, 1996, 2224, 2495, 2780, 3614, 3992, 4990, 5560, 6487, 7228, 7984, 9035, 9980, 11120, 12974, 14456, 18070, 19960, 25948, 28912, 32435, 36140, 39920, 51896, 64870, 69361, 72280, 103792, 129740, 138722, 144560, 259480, 277444, 346805, 518960, 554888, 693610, 901693, 1109776, 1387220, 1803386, 2774440, 3606772, 4508465, 5548880, 7213544, 9016930, 14427088, 18033860, 36067720, 72135440]

約数ペア:

[(1, 72135440), (2, 36067720), (4, 18033860), (5, 14427088), (8, 9016930), (10, 7213544), (13, 5548880), (16, 4508465), (20, 3606772), (26, 2774440), (40, 1803386), (52, 1387220), (65, 1109776), (80, 901693), (104, 693610), (130, 554888), (139, 518960), (208, 346805), (260, 277444), (278, 259480), (499, 144560), (520, 138722), (556, 129740), (695, 103792), (998, 72280), (1040, 69361), (1112, 64870), (1390, 51896), (1807, 39920), (1996, 36140), (2224, 32435), (2495, 28912), (2780, 25948), (3614, 19960), (3992, 18070), (4990, 14456), (5560, 12974), (6487, 11120), (7228, 9980), (7984, 9035)]