79687990

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{257}}^1\times {\mathrm{307}}^1$

素因数の和:672

約数の個数: 32

約数和(自身を含む): 145895904

約数和(自身を除く): 66207914

約数列:

[1, 2, 5, 10, 101, 202, 257, 307, 505, 514, 614, 1010, 1285, 1535, 2570, 3070, 25957, 31007, 51914, 62014, 78899, 129785, 155035, 157798, 259570, 310070, 394495, 788990, 7968799, 15937598, 39843995, 79687990]

約数ペア:

[(1, 79687990), (2, 39843995), (5, 15937598), (10, 7968799), (101, 788990), (202, 394495), (257, 310070), (307, 259570), (505, 157798), (514, 155035), (614, 129785), (1010, 78899), (1285, 62014), (1535, 51914), (2570, 31007), (3070, 25957)]