198040

素因数分解:

$2^3\times 5^1\times {\mathrm{4951}}^1$

素因数の和:4962

約数の個数: 16

約数和(自身を含む): 445680

約数和(自身を除く): 247640

約数列:

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

約数ペア:

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