7971940

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2003}}^1$

素因数の和:2211

約数の個数: 24

約数和(自身を含む): 16833600

約数和(自身を除く): 8861660

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 2003, 3980, 4006, 8012, 10015, 20030, 40060, 398597, 797194, 1594388, 1992985, 3985970, 7971940]

約数ペア:

[(1, 7971940), (2, 3985970), (4, 1992985), (5, 1594388), (10, 797194), (20, 398597), (199, 40060), (398, 20030), (796, 10015), (995, 8012), (1990, 4006), (2003, 3980)]