28657111

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{30781}}^1$

素因数の和:30814

約数の個数: 12

約数和(自身を含む): 35091480

約数和(自身を除く): 6434369

約数列:

[1, 7, 19, 49, 133, 931, 30781, 215467, 584839, 1508269, 4093873, 28657111]

約数ペア:

[(1, 28657111), (7, 4093873), (19, 1508269), (49, 584839), (133, 215467), (931, 30781)]