1664291240

素因数分解:

$2^3\times 5^1\times {\mathrm{1301}}^1\times {\mathrm{31981}}^1$

素因数の和:33293

約数の個数: 32

約数和(自身を含む): 3747650760

約数和(自身を除く): 2083359520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1301, 2602, 5204, 6505, 10408, 13010, 26020, 31981, 52040, 63962, 127924, 159905, 255848, 319810, 639620, 1279240, 41607281, 83214562, 166429124, 208036405, 332858248, 416072810, 832145620, 1664291240]

約数ペア:

[(1, 1664291240), (2, 832145620), (4, 416072810), (5, 332858248), (8, 208036405), (10, 166429124), (20, 83214562), (40, 41607281), (1301, 1279240), (2602, 639620), (5204, 319810), (6505, 255848), (10408, 159905), (13010, 127924), (26020, 63962), (31981, 52040)]