18673640

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4363}}^1$

素因数の和:4481

約数の個数: 32

約数和(自身を含む): 42418080

約数和(自身を除く): 23744440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 4363, 8726, 17452, 21815, 34904, 43630, 87260, 174520, 466841, 933682, 1867364, 2334205, 3734728, 4668410, 9336820, 18673640]

約数ペア:

[(1, 18673640), (2, 9336820), (4, 4668410), (5, 3734728), (8, 2334205), (10, 1867364), (20, 933682), (40, 466841), (107, 174520), (214, 87260), (428, 43630), (535, 34904), (856, 21815), (1070, 17452), (2140, 8726), (4280, 4363)]