1997189680

素因数分解:

$2^4\times 5^1\times {\mathrm{24964871}}^1$

素因数の和:24964884

約数の個数: 20

約数和(自身を含む): 4643466192

約数和(自身を除く): 2646276512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 24964871, 49929742, 99859484, 124824355, 199718968, 249648710, 399437936, 499297420, 998594840, 1997189680]

約数ペア:

[(1, 1997189680), (2, 998594840), (4, 499297420), (5, 399437936), (8, 249648710), (10, 199718968), (16, 124824355), (20, 99859484), (40, 49929742), (80, 24964871)]