21740225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{443}}^1$

素因数の和:617

約数の個数: 24

約数和(自身を含む): 29289792

約数和(自身を除く): 7549567

約数列:

[1, 5, 13, 25, 65, 151, 325, 443, 755, 1963, 2215, 3775, 5759, 9815, 11075, 28795, 49075, 66893, 143975, 334465, 869609, 1672325, 4348045, 21740225]

約数ペア:

[(1, 21740225), (5, 4348045), (13, 1672325), (25, 869609), (65, 334465), (151, 143975), (325, 66893), (443, 49075), (755, 28795), (1963, 11075), (2215, 9815), (3775, 5759)]