20009450

素因数分解:

$2^1\times 5^2\times {\mathrm{199}}^1\times {\mathrm{2011}}^1$

素因数の和:2222

約数の個数: 24

約数和(自身を含む): 37423200

約数和(自身を除く): 17413750

約数列:

[1, 2, 5, 10, 25, 50, 199, 398, 995, 1990, 2011, 4022, 4975, 9950, 10055, 20110, 50275, 100550, 400189, 800378, 2000945, 4001890, 10004725, 20009450]

約数ペア:

[(1, 20009450), (2, 10004725), (5, 4001890), (10, 2000945), (25, 800378), (50, 400189), (199, 100550), (398, 50275), (995, 20110), (1990, 10055), (2011, 9950), (4022, 4975)]