28772575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{397}}^1$

素因数の和:643

約数の個数: 24

約数和(自身を含む): 38691968

約数和(自身を除く): 9919393

約数列:

[1, 5, 13, 25, 65, 223, 325, 397, 1115, 1985, 2899, 5161, 5575, 9925, 14495, 25805, 72475, 88531, 129025, 442655, 1150903, 2213275, 5754515, 28772575]

約数ペア:

[(1, 28772575), (5, 5754515), (13, 2213275), (25, 1150903), (65, 442655), (223, 129025), (325, 88531), (397, 72475), (1115, 25805), (1985, 14495), (2899, 9925), (5161, 5575)]