21159802

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1\times {\mathrm{691}}^1$

素因数の和:1005

約数の個数: 16

約数和(自身を含む): 32435424

約数和(自身を除く): 11275622

約数列:

[1, 2, 61, 122, 251, 502, 691, 1382, 15311, 30622, 42151, 84302, 173441, 346882, 10579901, 21159802]

約数ペア:

[(1, 21159802), (2, 10579901), (61, 346882), (122, 173441), (251, 84302), (502, 42151), (691, 30622), (1382, 15311)]