18981800

素因数分解:

$2^3\times 5^2\times {\mathrm{107}}^1\times {\mathrm{887}}^1$

素因数の和:1010

約数の個数: 48

約数和(自身を含む): 44595360

約数和(自身を除く): 25613560

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 107, 200, 214, 428, 535, 856, 887, 1070, 1774, 2140, 2675, 3548, 4280, 4435, 5350, 7096, 8870, 10700, 17740, 21400, 22175, 35480, 44350, 88700, 94909, 177400, 189818, 379636, 474545, 759272, 949090, 1898180, 2372725, 3796360, 4745450, 9490900, 18981800]

約数ペア:

[(1, 18981800), (2, 9490900), (4, 4745450), (5, 3796360), (8, 2372725), (10, 1898180), (20, 949090), (25, 759272), (40, 474545), (50, 379636), (100, 189818), (107, 177400), (200, 94909), (214, 88700), (428, 44350), (535, 35480), (856, 22175), (887, 21400), (1070, 17740), (1774, 10700), (2140, 8870), (2675, 7096), (3548, 5350), (4280, 4435)]