19509920

素因数分解:

$2^5\times 5^1\times {\mathrm{121937}}^1$

素因数の和:121952

約数の個数: 24

約数和(自身を含む): 46092564

約数和(自身を除く): 26582644

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 121937, 243874, 487748, 609685, 975496, 1219370, 1950992, 2438740, 3901984, 4877480, 9754960, 19509920]

約数ペア:

[(1, 19509920), (2, 9754960), (4, 4877480), (5, 3901984), (8, 2438740), (10, 1950992), (16, 1219370), (20, 975496), (32, 609685), (40, 487748), (80, 243874), (160, 121937)]