21191620

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{17959}}^1$

素因数の和:18027

約数の個数: 24

約数和(自身を含む): 45259200

約数和(自身を除く): 24067580

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 236, 295, 590, 1180, 17959, 35918, 71836, 89795, 179590, 359180, 1059581, 2119162, 4238324, 5297905, 10595810, 21191620]

約数ペア:

[(1, 21191620), (2, 10595810), (4, 5297905), (5, 4238324), (10, 2119162), (20, 1059581), (59, 359180), (118, 179590), (236, 89795), (295, 71836), (590, 35918), (1180, 17959)]