8003780

素因数分解:

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

素因数の和:2219

約数の個数: 24

約数和(自身を含む): 16900800

約数和(自身を除く): 8897020

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 2011, 3980, 4022, 8044, 10055, 20110, 40220, 400189, 800378, 1600756, 2000945, 4001890, 8003780]

約数ペア:

[(1, 8003780), (2, 4001890), (4, 2000945), (5, 1600756), (10, 800378), (20, 400189), (199, 40220), (398, 20110), (796, 10055), (995, 8044), (1990, 4022), (2011, 3980)]