78891920

素因数分解:

$2^4\times 5^1\times {\mathrm{986149}}^1$

素因数の和:986162

約数の個数: 20

約数和(自身を含む): 183423900

約数和(自身を除く): 104531980

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 986149, 1972298, 3944596, 4930745, 7889192, 9861490, 15778384, 19722980, 39445960, 78891920]

約数ペア:

[(1, 78891920), (2, 39445960), (4, 19722980), (5, 15778384), (8, 9861490), (10, 7889192), (16, 4930745), (20, 3944596), (40, 1972298), (80, 986149)]