21889516

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{443}}^1\times {\mathrm{1123}}^1$

素因数の和:1581

約数の個数: 24

約数和(自身を含む): 41920704

約数和(自身を除く): 20031188

約数列:

[1, 2, 4, 11, 22, 44, 443, 886, 1123, 1772, 2246, 4492, 4873, 9746, 12353, 19492, 24706, 49412, 497489, 994978, 1989956, 5472379, 10944758, 21889516]

約数ペア:

[(1, 21889516), (2, 10944758), (4, 5472379), (11, 1989956), (22, 994978), (44, 497489), (443, 49412), (886, 24706), (1123, 19492), (1772, 12353), (2246, 9746), (4492, 4873)]