20921917261

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{389}}^1\times {\mathrm{108217}}^1$

素因数の和:108684

約数の個数: 16

約数和(自身を含む): 24310091520

約数和(自身を除く): 3388174259

約数列:

[1, 7, 71, 389, 497, 2723, 27619, 108217, 193333, 757519, 7683407, 42096413, 53783849, 294674891, 2988845323, 20921917261]

約数ペア:

[(1, 20921917261), (7, 2988845323), (71, 294674891), (389, 53783849), (497, 42096413), (2723, 7683407), (27619, 757519), (108217, 193333)]