78740240

素因数分解:

$2^4\times 5^1\times {\mathrm{984253}}^1$

素因数の和:984266

約数の個数: 20

約数和(自身を含む): 183071244

約数和(自身を除く): 104331004

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 984253, 1968506, 3937012, 4921265, 7874024, 9842530, 15748048, 19685060, 39370120, 78740240]

約数ペア:

[(1, 78740240), (2, 39370120), (4, 19685060), (5, 15748048), (8, 9842530), (10, 7874024), (16, 4921265), (20, 3937012), (40, 1968506), (80, 984253)]