21249910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{193181}}^1$

素因数の和:193199

約数の個数: 16

約数和(自身を含む): 41727312

約数和(自身を除く): 20477402

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 193181, 386362, 965905, 1931810, 2124991, 4249982, 10624955, 21249910]

約数ペア:

[(1, 21249910), (2, 10624955), (5, 4249982), (10, 2124991), (11, 1931810), (22, 965905), (55, 386362), (110, 193181)]