78891440

素因数分解:

$2^4\times 5^1\times {\mathrm{986143}}^1$

素因数の和:986156

約数の個数: 20

約数和(自身を含む): 183422784

約数和(自身を除く): 104531344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 986143, 1972286, 3944572, 4930715, 7889144, 9861430, 15778288, 19722860, 39445720, 78891440]

約数ペア:

[(1, 78891440), (2, 39445720), (4, 19722860), (5, 15778288), (8, 9861430), (10, 7889144), (16, 4930715), (20, 3944572), (40, 1972286), (80, 986143)]