20697940

素因数分解:

$2^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{3371}}^1$

素因数の和:3687

約数の個数: 24

約数和(自身を含む): 43620192

約数和(自身を除く): 22922252

約数列:

[1, 2, 4, 5, 10, 20, 307, 614, 1228, 1535, 3070, 3371, 6140, 6742, 13484, 16855, 33710, 67420, 1034897, 2069794, 4139588, 5174485, 10348970, 20697940]

約数ペア:

[(1, 20697940), (2, 10348970), (4, 5174485), (5, 4139588), (10, 2069794), (20, 1034897), (307, 67420), (614, 33710), (1228, 16855), (1535, 13484), (3070, 6742), (3371, 6140)]