21115180

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{9343}}^1$

素因数の和:9465

約数の個数: 24

約数和(自身を含む): 44739072

約数和(自身を除く): 23623892

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 9343, 18686, 37372, 46715, 93430, 186860, 1055759, 2111518, 4223036, 5278795, 10557590, 21115180]

約数ペア:

[(1, 21115180), (2, 10557590), (4, 5278795), (5, 4223036), (10, 2111518), (20, 1055759), (113, 186860), (226, 93430), (452, 46715), (565, 37372), (1130, 18686), (2260, 9343)]