518960

素因数分解:

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

素因数の和:525

約数の個数: 40

約数和(自身を含む): 1302000

約数和(自身を除く): 783040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 499, 520, 998, 1040, 1996, 2495, 3992, 4990, 6487, 7984, 9980, 12974, 19960, 25948, 32435, 39920, 51896, 64870, 103792, 129740, 259480, 518960]

約数ペア:

[(1, 518960), (2, 259480), (4, 129740), (5, 103792), (8, 64870), (10, 51896), (13, 39920), (16, 32435), (20, 25948), (26, 19960), (40, 12974), (52, 9980), (65, 7984), (80, 6487), (104, 4990), (130, 3992), (208, 2495), (260, 1996), (499, 1040), (520, 998)]