18889960

素因数分解:

$2^3\times 5^1\times {\mathrm{472249}}^1$

素因数の和:472260

約数の個数: 16

約数和(自身を含む): 42502500

約数和(自身を除く): 23612540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 472249, 944498, 1888996, 2361245, 3777992, 4722490, 9444980, 18889960]

約数ペア:

[(1, 18889960), (2, 9444980), (4, 4722490), (5, 3777992), (8, 2361245), (10, 1888996), (20, 944498), (40, 472249)]