20382160

素因数分解:

$2^4\times 5^1\times {\mathrm{254777}}^1$

素因数の和:254790

約数の個数: 20

約数和(自身を含む): 47388708

約数和(自身を除く): 27006548

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 254777, 509554, 1019108, 1273885, 2038216, 2547770, 4076432, 5095540, 10191080, 20382160]

約数ペア:

[(1, 20382160), (2, 10191080), (4, 5095540), (5, 4076432), (8, 2547770), (10, 2038216), (16, 1273885), (20, 1019108), (40, 509554), (80, 254777)]