19990010080

素因数分解:

$2^5\times 5^1\times {\mathrm{124937563}}^1$

素因数の和:124937578

約数の個数: 24

約数和(自身を含む): 47226399192

約数和(自身を除く): 27236389112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 124937563, 249875126, 499750252, 624687815, 999500504, 1249375630, 1999001008, 2498751260, 3998002016, 4997502520, 9995005040, 19990010080]

約数ペア:

[(1, 19990010080), (2, 9995005040), (4, 4997502520), (5, 3998002016), (8, 2498751260), (10, 1999001008), (16, 1249375630), (20, 999500504), (32, 624687815), (40, 499750252), (80, 249875126), (160, 124937563)]