78581680

素因数分解:

$2^4\times 5^1\times {\mathrm{982271}}^1$

素因数の和:982284

約数の個数: 20

約数和(自身を含む): 182702592

約数和(自身を除く): 104120912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 982271, 1964542, 3929084, 4911355, 7858168, 9822710, 15716336, 19645420, 39290840, 78581680]

約数ペア:

[(1, 78581680), (2, 39290840), (4, 19645420), (5, 15716336), (8, 9822710), (10, 7858168), (16, 4911355), (20, 3929084), (40, 1964542), (80, 982271)]