21176860

素因数分解:

$2^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{3449}}^1$

素因数の和:3765

約数の個数: 24

約数和(自身を含む): 44629200

約数和(自身を除く): 23452340

約数列:

[1, 2, 4, 5, 10, 20, 307, 614, 1228, 1535, 3070, 3449, 6140, 6898, 13796, 17245, 34490, 68980, 1058843, 2117686, 4235372, 5294215, 10588430, 21176860]

約数ペア:

[(1, 21176860), (2, 10588430), (4, 5294215), (5, 4235372), (10, 2117686), (20, 1058843), (307, 68980), (614, 34490), (1228, 17245), (1535, 13796), (3070, 6898), (3449, 6140)]