18409420

素因数分解:

$2^2\times 5^1\times {\mathrm{277}}^1\times {\mathrm{3323}}^1$

素因数の和:3609

約数の個数: 24

約数和(自身を含む): 38811024

約数和(自身を除く): 20401604

約数列:

[1, 2, 4, 5, 10, 20, 277, 554, 1108, 1385, 2770, 3323, 5540, 6646, 13292, 16615, 33230, 66460, 920471, 1840942, 3681884, 4602355, 9204710, 18409420]

約数ペア:

[(1, 18409420), (2, 9204710), (4, 4602355), (5, 3681884), (10, 1840942), (20, 920471), (277, 66460), (554, 33230), (1108, 16615), (1385, 13292), (2770, 6646), (3323, 5540)]