21241891

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{3917}}^1$

素因数の和:3974

約数の個数: 16

約数和(自身を含む): 25388640

約数和(自身を除く): 4146749

約数列:

[1, 11, 17, 29, 187, 319, 493, 3917, 5423, 43087, 66589, 113593, 732479, 1249523, 1931081, 21241891]

約数ペア:

[(1, 21241891), (11, 1931081), (17, 1249523), (29, 732479), (187, 113593), (319, 66589), (493, 43087), (3917, 5423)]