390838040

素因数分解:

$2^3\times 5^1\times {\mathrm{9770951}}^1$

素因数の和:9770962

約数の個数: 16

約数和(自身を含む): 879385680

約数和(自身を除く): 488547640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9770951, 19541902, 39083804, 48854755, 78167608, 97709510, 195419020, 390838040]

約数ペア:

[(1, 390838040), (2, 195419020), (4, 97709510), (5, 78167608), (8, 48854755), (10, 39083804), (20, 19541902), (40, 9770951)]