21356960

素因数分解:

$2^5\times 5^1\times {\mathrm{133481}}^1$

素因数の和:133496

約数の個数: 24

約数和(自身を含む): 50456196

約数和(自身を除く): 29099236

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 133481, 266962, 533924, 667405, 1067848, 1334810, 2135696, 2669620, 4271392, 5339240, 10678480, 21356960]

約数ペア:

[(1, 21356960), (2, 10678480), (4, 5339240), (5, 4271392), (8, 2669620), (10, 2135696), (16, 1334810), (20, 1067848), (32, 667405), (40, 533924), (80, 266962), (160, 133481)]