18108080

素因数分解:

$2^4\times 5^1\times {\mathrm{461}}^1\times {\mathrm{491}}^1$

素因数の和:965

約数の個数: 40

約数和(自身を含む): 42278544

約数和(自身を除く): 24170464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 461, 491, 922, 982, 1844, 1964, 2305, 2455, 3688, 3928, 4610, 4910, 7376, 7856, 9220, 9820, 18440, 19640, 36880, 39280, 226351, 452702, 905404, 1131755, 1810808, 2263510, 3621616, 4527020, 9054040, 18108080]

約数ペア:

[(1, 18108080), (2, 9054040), (4, 4527020), (5, 3621616), (8, 2263510), (10, 1810808), (16, 1131755), (20, 905404), (40, 452702), (80, 226351), (461, 39280), (491, 36880), (922, 19640), (982, 18440), (1844, 9820), (1964, 9220), (2305, 7856), (2455, 7376), (3688, 4910), (3928, 4610)]