81500180

素因数分解:

$2^2\times 5^1\times {\mathrm{359}}^1\times {\mathrm{11351}}^1$

素因数の和:11719

約数の個数: 24

約数和(自身を含む): 171642240

約数和(自身を除く): 90142060

約数列:

[1, 2, 4, 5, 10, 20, 359, 718, 1436, 1795, 3590, 7180, 11351, 22702, 45404, 56755, 113510, 227020, 4075009, 8150018, 16300036, 20375045, 40750090, 81500180]

約数ペア:

[(1, 81500180), (2, 40750090), (4, 20375045), (5, 16300036), (10, 8150018), (20, 4075009), (359, 227020), (718, 113510), (1436, 56755), (1795, 45404), (3590, 22702), (7180, 11351)]