21205054

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{26309}}^1$

素因数の和:26355

約数の個数: 16

約数和(自身を含む): 35360640

約数和(自身を除く): 14155586

約数列:

[1, 2, 13, 26, 31, 62, 403, 806, 26309, 52618, 342017, 684034, 815579, 1631158, 10602527, 21205054]

約数ペア:

[(1, 21205054), (2, 10602527), (13, 1631158), (26, 815579), (31, 684034), (62, 342017), (403, 52618), (806, 26309)]