639906

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^1\times {\mathrm{4637}}^1$

素因数の和:4665

約数の個数: 16

約数和(自身を含む): 1335744

約数和(自身を除く): 695838

約数列:

[1, 2, 3, 6, 23, 46, 69, 138, 4637, 9274, 13911, 27822, 106651, 213302, 319953, 639906]

約数ペア:

[(1, 639906), (2, 319953), (3, 213302), (6, 106651), (23, 27822), (46, 13911), (69, 9274), (138, 4637)]