20213274680

素因数分解:

$2^3\times 5^1\times {\mathrm{2531}}^1\times {\mathrm{199657}}^1$

素因数の和:202199

約数の個数: 32

約数和(自身を含む): 45498065040

約数和(自身を除く): 25284790360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2531, 5062, 10124, 12655, 20248, 25310, 50620, 101240, 199657, 399314, 798628, 998285, 1597256, 1996570, 3993140, 7986280, 505331867, 1010663734, 2021327468, 2526659335, 4042654936, 5053318670, 10106637340, 20213274680]

約数ペア:

[(1, 20213274680), (2, 10106637340), (4, 5053318670), (5, 4042654936), (8, 2526659335), (10, 2021327468), (20, 1010663734), (40, 505331867), (2531, 7986280), (5062, 3993140), (10124, 1996570), (12655, 1597256), (20248, 998285), (25310, 798628), (50620, 399314), (101240, 199657)]