90865520

素因数分解:

$2^4\times 5^1\times {\mathrm{1135819}}^1$

素因数の和:1135832

約数の個数: 20

約数和(自身を含む): 211262520

約数和(自身を除く): 120397000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1135819, 2271638, 4543276, 5679095, 9086552, 11358190, 18173104, 22716380, 45432760, 90865520]

約数ペア:

[(1, 90865520), (2, 45432760), (4, 22716380), (5, 18173104), (8, 11358190), (10, 9086552), (16, 5679095), (20, 4543276), (40, 2271638), (80, 1135819)]