21320354

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{15887}}^1$

素因数の和:15961

約数の個数: 16

約数和(自身を含む): 35462016

約数和(自身を除く): 14141662

約数列:

[1, 2, 11, 22, 61, 122, 671, 1342, 15887, 31774, 174757, 349514, 969107, 1938214, 10660177, 21320354]

約数ペア:

[(1, 21320354), (2, 10660177), (11, 1938214), (22, 969107), (61, 349514), (122, 174757), (671, 31774), (1342, 15887)]