68417884880

素因数分解:

$2^4\times 5^1\times {\mathrm{855223561}}^1$

素因数の和:855223574

約数の個数: 20

約数和(自身を含む): 159071582532

約数和(自身を除く): 90653697652

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 855223561, 1710447122, 3420894244, 4276117805, 6841788488, 8552235610, 13683576976, 17104471220, 34208942440, 68417884880]

約数ペア:

[(1, 68417884880), (2, 34208942440), (4, 17104471220), (5, 13683576976), (8, 8552235610), (10, 6841788488), (16, 4276117805), (20, 3420894244), (40, 1710447122), (80, 855223561)]