40997840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{499}}^1$

素因数の和:604

約数の個数: 80

約数和(自身を含む): 104160000

約数和(自身を除く): 63162160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 79, 80, 104, 130, 158, 208, 260, 316, 395, 499, 520, 632, 790, 998, 1027, 1040, 1264, 1580, 1996, 2054, 2495, 3160, 3992, 4108, 4990, 5135, 6320, 6487, 7984, 8216, 9980, 10270, 12974, 16432, 19960, 20540, 25948, 32435, 39421, 39920, 41080, 51896, 64870, 78842, 82160, 103792, 129740, 157684, 197105, 259480, 315368, 394210, 512473, 518960, 630736, 788420, 1024946, 1576840, 2049892, 2562365, 3153680, 4099784, 5124730, 8199568, 10249460, 20498920, 40997840]

約数ペア:

[(1, 40997840), (2, 20498920), (4, 10249460), (5, 8199568), (8, 5124730), (10, 4099784), (13, 3153680), (16, 2562365), (20, 2049892), (26, 1576840), (40, 1024946), (52, 788420), (65, 630736), (79, 518960), (80, 512473), (104, 394210), (130, 315368), (158, 259480), (208, 197105), (260, 157684), (316, 129740), (395, 103792), (499, 82160), (520, 78842), (632, 64870), (790, 51896), (998, 41080), (1027, 39920), (1040, 39421), (1264, 32435), (1580, 25948), (1996, 20540), (2054, 19960), (2495, 16432), (3160, 12974), (3992, 10270), (4108, 9980), (4990, 8216), (5135, 7984), (6320, 6487)]