21103621

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{4493}}^1$

素因数の和:4572

約数の個数: 16

約数和(自身を含む): 26748288

約数和(自身を除く): 5644667

約数列:

[1, 7, 11, 61, 77, 427, 671, 4493, 4697, 31451, 49423, 274073, 345961, 1918511, 3014803, 21103621]

約数ペア:

[(1, 21103621), (7, 3014803), (11, 1918511), (61, 345961), (77, 274073), (427, 49423), (671, 31451), (4493, 4697)]