1390757620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{9933983}}^1$

素因数の和:9933999

約数の個数: 24

約数和(自身を含む): 3337818624

約数和(自身を除く): 1947061004

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 9933983, 19867966, 39735932, 49669915, 69537881, 99339830, 139075762, 198679660, 278151524, 347689405, 695378810, 1390757620]

約数ペア:

[(1, 1390757620), (2, 695378810), (4, 347689405), (5, 278151524), (7, 198679660), (10, 139075762), (14, 99339830), (20, 69537881), (28, 49669915), (35, 39735932), (70, 19867966), (140, 9933983)]