90786620

素因数分解:

$2^2\times 5^1\times {\mathrm{4539331}}^1$

素因数の和:4539340

約数の個数: 12

約数和(自身を含む): 190651944

約数和(自身を除く): 99865324

約数列:

[1, 2, 4, 5, 10, 20, 4539331, 9078662, 18157324, 22696655, 45393310, 90786620]

約数ペア:

[(1, 90786620), (2, 45393310), (4, 22696655), (5, 18157324), (10, 9078662), (20, 4539331)]