78071920

素因数分解:

$2^4\times 5^1\times {\mathrm{975899}}^1$

素因数の和:975912

約数の個数: 20

約数和(自身を含む): 181517400

約数和(自身を除く): 103445480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 975899, 1951798, 3903596, 4879495, 7807192, 9758990, 15614384, 19517980, 39035960, 78071920]

約数ペア:

[(1, 78071920), (2, 39035960), (4, 19517980), (5, 15614384), (8, 9758990), (10, 7807192), (16, 4879495), (20, 3903596), (40, 1951798), (80, 975899)]