28108880

素因数分解:

$2^4\times 5^1\times {\mathrm{351361}}^1$

素因数の和:351374

約数の個数: 20

約数和(自身を含む): 65353332

約数和(自身を除く): 37244452

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 351361, 702722, 1405444, 1756805, 2810888, 3513610, 5621776, 7027220, 14054440, 28108880]

約数ペア:

[(1, 28108880), (2, 14054440), (4, 7027220), (5, 5621776), (8, 3513610), (10, 2810888), (16, 1756805), (20, 1405444), (40, 702722), (80, 351361)]