21719764

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{401}}^1\times {\mathrm{1231}}^1$

素因数の和:1647

約数の個数: 24

約数和(自身を含む): 41602176

約数和(自身を除く): 19882412

約数列:

[1, 2, 4, 11, 22, 44, 401, 802, 1231, 1604, 2462, 4411, 4924, 8822, 13541, 17644, 27082, 54164, 493631, 987262, 1974524, 5429941, 10859882, 21719764]

約数ペア:

[(1, 21719764), (2, 10859882), (4, 5429941), (11, 1974524), (22, 987262), (44, 493631), (401, 54164), (802, 27082), (1231, 17644), (1604, 13541), (2462, 8822), (4411, 4924)]