8672420

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2179}}^1$

素因数の和:2387

約数の個数: 24

約数和(自身を含む): 18312000

約数和(自身を除く): 9639580

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 2179, 3980, 4358, 8716, 10895, 21790, 43580, 433621, 867242, 1734484, 2168105, 4336210, 8672420]

約数ペア:

[(1, 8672420), (2, 4336210), (4, 2168105), (5, 1734484), (10, 867242), (20, 433621), (199, 43580), (398, 21790), (796, 10895), (995, 8716), (1990, 4358), (2179, 3980)]