18921000940

素因数分解:

$2^2\times 5^1\times {\mathrm{1447}}^1\times {\mathrm{653801}}^1$

素因数の和:655257

約数の個数: 24

約数和(自身を含む): 39761622432

約数和(自身を除く): 20840621492

約数列:

[1, 2, 4, 5, 10, 20, 1447, 2894, 5788, 7235, 14470, 28940, 653801, 1307602, 2615204, 3269005, 6538010, 13076020, 946050047, 1892100094, 3784200188, 4730250235, 9460500470, 18921000940]

約数ペア:

[(1, 18921000940), (2, 9460500470), (4, 4730250235), (5, 3784200188), (10, 1892100094), (20, 946050047), (1447, 13076020), (2894, 6538010), (5788, 3269005), (7235, 2615204), (14470, 1307602), (28940, 653801)]