21279369

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1\times {\mathrm{1531}}^1$

素因数の和:1688

約数の個数: 16

約数和(自身を含む): 29340864

約数和(自身を除く): 8061495

約数列:

[1, 3, 41, 113, 123, 339, 1531, 4593, 4633, 13899, 62771, 173003, 188313, 519009, 7093123, 21279369]

約数ペア:

[(1, 21279369), (3, 7093123), (41, 519009), (113, 188313), (123, 173003), (339, 62771), (1531, 13899), (4593, 4633)]