402740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1549}}^1$

素因数の和:1571

約数の個数: 24

約数和(自身を含む): 911400

約数和(自身を除く): 508660

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1549, 3098, 6196, 7745, 15490, 20137, 30980, 40274, 80548, 100685, 201370, 402740]

約数ペア:

[(1, 402740), (2, 201370), (4, 100685), (5, 80548), (10, 40274), (13, 30980), (20, 20137), (26, 15490), (52, 7745), (65, 6196), (130, 3098), (260, 1549)]