21000337475

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{443}}^1\times {\mathrm{145861}}^1$

素因数の和:146327

約数の個数: 24

約数和(自身を含む): 28107023952

約数和(自身を除く): 7106686477

約数列:

[1, 5, 13, 25, 65, 325, 443, 2215, 5759, 11075, 28795, 143975, 145861, 729305, 1896193, 3646525, 9480965, 47404825, 64616423, 323082115, 840013499, 1615410575, 4200067495, 21000337475]

約数ペア:

[(1, 21000337475), (5, 4200067495), (13, 1615410575), (25, 840013499), (65, 323082115), (325, 64616423), (443, 47404825), (2215, 9480965), (5759, 3646525), (11075, 1896193), (28795, 729305), (143975, 145861)]