21263668

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{312701}}^1$

素因数の和:312722

約数の個数: 12

約数和(自身を含む): 39400452

約数和(自身を除く): 18136784

約数列:

[1, 2, 4, 17, 34, 68, 312701, 625402, 1250804, 5315917, 10631834, 21263668]

約数ペア:

[(1, 21263668), (2, 10631834), (4, 5315917), (17, 1250804), (34, 625402), (68, 312701)]