51987080

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{2647}}^1$

素因数の和:3149

約数の個数: 32

約数和(自身を含む): 117253440

約数和(自身を除く): 65266360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 2647, 3928, 4910, 5294, 9820, 10588, 13235, 19640, 21176, 26470, 52940, 105880, 1299677, 2599354, 5198708, 6498385, 10397416, 12996770, 25993540, 51987080]

約数ペア:

[(1, 51987080), (2, 25993540), (4, 12996770), (5, 10397416), (8, 6498385), (10, 5198708), (20, 2599354), (40, 1299677), (491, 105880), (982, 52940), (1964, 26470), (2455, 21176), (2647, 19640), (3928, 13235), (4910, 10588), (5294, 9820)]