78975920

素因数分解:

$2^4\times 5^1\times {\mathrm{987199}}^1$

素因数の和:987212

約数の個数: 20

約数和(自身を含む): 183619200

約数和(自身を除く): 104643280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 987199, 1974398, 3948796, 4935995, 7897592, 9871990, 15795184, 19743980, 39487960, 78975920]

約数ペア:

[(1, 78975920), (2, 39487960), (4, 19743980), (5, 15795184), (8, 9871990), (10, 7897592), (16, 4935995), (20, 3948796), (40, 1974398), (80, 987199)]