20571518

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{15329}}^1$

素因数の和:15403

約数の個数: 16

約数和(自身を含む): 34216560

約数和(自身を除く): 13645042

約数列:

[1, 2, 11, 22, 61, 122, 671, 1342, 15329, 30658, 168619, 337238, 935069, 1870138, 10285759, 20571518]

約数ペア:

[(1, 20571518), (2, 10285759), (11, 1870138), (22, 935069), (61, 337238), (122, 168619), (671, 30658), (1342, 15329)]