21786140

素因数分解:

$2^2\times 5^1\times {\mathrm{907}}^1\times {\mathrm{1201}}^1$

素因数の和:2117

約数の個数: 24

約数和(自身を含む): 45839472

約数和(自身を除く): 24053332

約数列:

[1, 2, 4, 5, 10, 20, 907, 1201, 1814, 2402, 3628, 4535, 4804, 6005, 9070, 12010, 18140, 24020, 1089307, 2178614, 4357228, 5446535, 10893070, 21786140]

約数ペア:

[(1, 21786140), (2, 10893070), (4, 5446535), (5, 4357228), (10, 2178614), (20, 1089307), (907, 24020), (1201, 18140), (1814, 12010), (2402, 9070), (3628, 6005), (4535, 4804)]