18427580

素因数分解:

$2^2\times 5^1\times {\mathrm{921379}}^1$

素因数の和:921388

約数の個数: 12

約数和(自身を含む): 38697960

約数和(自身を除く): 20270380

約数列:

[1, 2, 4, 5, 10, 20, 921379, 1842758, 3685516, 4606895, 9213790, 18427580]

約数ペア:

[(1, 18427580), (2, 9213790), (4, 4606895), (5, 3685516), (10, 1842758), (20, 921379)]