78912880

素因数分解:

$2^4\times 5^1\times {\mathrm{986411}}^1$

素因数の和:986424

約数の個数: 20

約数和(自身を含む): 183472632

約数和(自身を除く): 104559752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 986411, 1972822, 3945644, 4932055, 7891288, 9864110, 15782576, 19728220, 39456440, 78912880]

約数ペア:

[(1, 78912880), (2, 39456440), (4, 19728220), (5, 15782576), (8, 9864110), (10, 7891288), (16, 4932055), (20, 3945644), (40, 1972822), (80, 986411)]