20212553621

素因数分解:

${\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{151}}^1\times {\mathrm{21407}}^1$

素因数の和:21621

約数の個数: 24

約数和(自身を含む): 22628427264

約数和(自身を除く): 2415873643

約数列:

[1, 13, 37, 151, 169, 481, 1963, 5587, 6253, 21407, 25519, 72631, 278291, 792059, 944203, 3232457, 3617783, 10296767, 42021941, 119600909, 133857971, 546285233, 1554811817, 20212553621]

約数ペア:

[(1, 20212553621), (13, 1554811817), (37, 546285233), (151, 133857971), (169, 119600909), (481, 42021941), (1963, 10296767), (5587, 3617783), (6253, 3232457), (21407, 944203), (25519, 792059), (72631, 278291)]