643956

素因数分解:

$2^2\times 3^1\times {\mathrm{103}}^1\times {\mathrm{521}}^1$

素因数の和:631

約数の個数: 24

約数和(自身を含む): 1520064

約数和(自身を除く): 876108

約数列:

[1, 2, 3, 4, 6, 12, 103, 206, 309, 412, 521, 618, 1042, 1236, 1563, 2084, 3126, 6252, 53663, 107326, 160989, 214652, 321978, 643956]

約数ペア:

[(1, 643956), (2, 321978), (3, 214652), (4, 160989), (6, 107326), (12, 53663), (103, 6252), (206, 3126), (309, 2084), (412, 1563), (521, 1236), (618, 1042)]