259480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{499}}^1$

素因数の和:523

約数の個数: 32

約数和(自身を含む): 630000

約数和(自身を除く): 370520

約数列:

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

約数ペア:

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