78801560

素因数分解:

$2^3\times 5^1\times {\mathrm{1970039}}^1$

素因数の和:1970050

約数の個数: 16

約数和(自身を含む): 177303600

約数和(自身を除く): 98502040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1970039, 3940078, 7880156, 9850195, 15760312, 19700390, 39400780, 78801560]

約数ペア:

[(1, 78801560), (2, 39400780), (4, 19700390), (5, 15760312), (8, 9850195), (10, 7880156), (20, 3940078), (40, 1970039)]