396080

素因数分解:

$2^4\times 5^1\times {\mathrm{4951}}^1$

素因数の和:4964

約数の個数: 20

約数和(自身を含む): 921072

約数和(自身を除く): 524992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4951, 9902, 19804, 24755, 39608, 49510, 79216, 99020, 198040, 396080]

約数ペア:

[(1, 396080), (2, 198040), (4, 99020), (5, 79216), (8, 49510), (10, 39608), (16, 24755), (20, 19804), (40, 9902), (80, 4951)]