21171865

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29611}}^1$

素因数の和:29640

約数の個数: 16

約数和(自身を含む): 29848896

約数和(自身を除く): 8677031

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 29611, 148055, 325721, 384943, 1628605, 1924715, 4234373, 21171865]

約数ペア:

[(1, 21171865), (5, 4234373), (11, 1924715), (13, 1628605), (55, 384943), (65, 325721), (143, 148055), (715, 29611)]