20019950

素因数分解:

$2^1\times 5^2\times {\mathrm{431}}^1\times {\mathrm{929}}^1$

素因数の和:1372

約数の個数: 24

約数和(自身を含む): 37363680

約数和(自身を除く): 17343730

約数列:

[1, 2, 5, 10, 25, 50, 431, 862, 929, 1858, 2155, 4310, 4645, 9290, 10775, 21550, 23225, 46450, 400399, 800798, 2001995, 4003990, 10009975, 20019950]

約数ペア:

[(1, 20019950), (2, 10009975), (5, 4003990), (10, 2001995), (25, 800798), (50, 400399), (431, 46450), (862, 23225), (929, 21550), (1858, 10775), (2155, 9290), (4310, 4645)]