78681560

素因数分解:

$2^3\times 5^1\times {\mathrm{1967039}}^1$

素因数の和:1967050

約数の個数: 16

約数和(自身を含む): 177033600

約数和(自身を除く): 98352040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1967039, 3934078, 7868156, 9835195, 15736312, 19670390, 39340780, 78681560]

約数ペア:

[(1, 78681560), (2, 39340780), (4, 19670390), (5, 15736312), (8, 9835195), (10, 7868156), (20, 3934078), (40, 1967039)]