21247642

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{13397}}^1$

素因数の和:13473

約数の個数: 16

約数和(自身を含む): 34888392

約数和(自身を除く): 13640750

約数列:

[1, 2, 13, 26, 61, 122, 793, 1586, 13397, 26794, 174161, 348322, 817217, 1634434, 10623821, 21247642]

約数ペア:

[(1, 21247642), (2, 10623821), (13, 1634434), (26, 817217), (61, 348322), (122, 174161), (793, 26794), (1586, 13397)]