21285512

素因数分解:

$2^3\times {\mathrm{1063}}^1\times {\mathrm{2503}}^1$

素因数の和:3572

約数の個数: 16

約数和(自身を含む): 39963840

約数和(自身を除く): 18678328

約数列:

[1, 2, 4, 8, 1063, 2126, 2503, 4252, 5006, 8504, 10012, 20024, 2660689, 5321378, 10642756, 21285512]

約数ペア:

[(1, 21285512), (2, 10642756), (4, 5321378), (8, 2660689), (1063, 20024), (2126, 10012), (2503, 8504), (4252, 5006)]