21090671

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{223}}^1\times {\mathrm{229}}^1$

素因数の和:518

約数の個数: 16

約数和(自身を含む): 24729600

約数和(自身を除く): 3638929

約数列:

[1, 7, 59, 223, 229, 413, 1561, 1603, 13157, 13511, 51067, 92099, 94577, 357469, 3012953, 21090671]

約数ペア:

[(1, 21090671), (7, 3012953), (59, 357469), (223, 94577), (229, 92099), (413, 51067), (1561, 13511), (1603, 13157)]