18986740

素因数分解:

$2^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{6287}}^1$

素因数の和:6447

約数の個数: 24

約数和(自身を含む): 40142592

約数和(自身を除く): 21155852

約数列:

[1, 2, 4, 5, 10, 20, 151, 302, 604, 755, 1510, 3020, 6287, 12574, 25148, 31435, 62870, 125740, 949337, 1898674, 3797348, 4746685, 9493370, 18986740]

約数ペア:

[(1, 18986740), (2, 9493370), (4, 4746685), (5, 3797348), (10, 1898674), (20, 949337), (151, 125740), (302, 62870), (604, 31435), (755, 25148), (1510, 12574), (3020, 6287)]