21872345

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{2861}}^1$

素因数の和:3016

約数の個数: 16

約数和(自身を含む): 28848960

約数和(自身を除く): 6976615

約数列:

[1, 5, 11, 55, 139, 695, 1529, 2861, 7645, 14305, 31471, 157355, 397679, 1988395, 4374469, 21872345]

約数ペア:

[(1, 21872345), (5, 4374469), (11, 1988395), (55, 397679), (139, 157355), (695, 31471), (1529, 14305), (2861, 7645)]