1313408020

素因数分解:

$2^2\times 5^1\times {\mathrm{3881}}^1\times {\mathrm{16921}}^1$

素因数の和:20811

約数の個数: 24

約数和(自身を含む): 2759030568

約数和(自身を除く): 1445622548

約数列:

[1, 2, 4, 5, 10, 20, 3881, 7762, 15524, 16921, 19405, 33842, 38810, 67684, 77620, 84605, 169210, 338420, 65670401, 131340802, 262681604, 328352005, 656704010, 1313408020]

約数ペア:

[(1, 1313408020), (2, 656704010), (4, 328352005), (5, 262681604), (10, 131340802), (20, 65670401), (3881, 338420), (7762, 169210), (15524, 84605), (16921, 77620), (19405, 67684), (33842, 38810)]