21357740

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{22721}}^1$

素因数の和:22777

約数の個数: 24

約数和(自身を含む): 45807552

約数和(自身を除く): 24449812

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 22721, 45442, 90884, 113605, 227210, 454420, 1067887, 2135774, 4271548, 5339435, 10678870, 21357740]

約数ペア:

[(1, 21357740), (2, 10678870), (4, 5339435), (5, 4271548), (10, 2135774), (20, 1067887), (47, 454420), (94, 227210), (188, 113605), (235, 90884), (470, 45442), (940, 22721)]