21594671

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{491}}^1$

素因数の和:662

約数の個数: 16

約数和(自身を含む): 25379328

約数和(自身を除く): 3784657

約数列:

[1, 7, 61, 103, 427, 491, 721, 3437, 6283, 29951, 43981, 50573, 209657, 354011, 3084953, 21594671]

約数ペア:

[(1, 21594671), (7, 3084953), (61, 354011), (103, 209657), (427, 50573), (491, 43981), (721, 29951), (3437, 6283)]