18912820

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{4951}}^1$

素因数の和:5151

約数の個数: 24

約数和(自身を含む): 39932928

約数和(自身を除く): 21020108

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 4951, 9902, 19804, 24755, 49510, 99020, 945641, 1891282, 3782564, 4728205, 9456410, 18912820]

約数ペア:

[(1, 18912820), (2, 9456410), (4, 4728205), (5, 3782564), (10, 1891282), (20, 945641), (191, 99020), (382, 49510), (764, 24755), (955, 19804), (1910, 9902), (3820, 4951)]