21161960

素因数分解:

$2^3\times 5^1\times {\mathrm{529049}}^1$

素因数の和:529060

約数の個数: 16

約数和(自身を含む): 47614500

約数和(自身を除く): 26452540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 529049, 1058098, 2116196, 2645245, 4232392, 5290490, 10580980, 21161960]

約数ペア:

[(1, 21161960), (2, 10580980), (4, 5290490), (5, 4232392), (8, 2645245), (10, 2116196), (20, 1058098), (40, 529049)]