18721960

素因数分解:

$2^3\times 5^1\times {\mathrm{468049}}^1$

素因数の和:468060

約数の個数: 16

約数和(自身を含む): 42124500

約数和(自身を除く): 23402540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 468049, 936098, 1872196, 2340245, 3744392, 4680490, 9360980, 18721960]

約数ペア:

[(1, 18721960), (2, 9360980), (4, 4680490), (5, 3744392), (8, 2340245), (10, 1872196), (20, 936098), (40, 468049)]