9820090

素因数分解:

$2^1\times 5^1\times 7^4\times {\mathrm{409}}^1$

素因数の和:444

約数の個数: 40

約数和(自身を含む): 20671380

約数和(自身を除く): 10851290

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 409, 490, 686, 818, 1715, 2045, 2401, 2863, 3430, 4090, 4802, 5726, 12005, 14315, 20041, 24010, 28630, 40082, 100205, 140287, 200410, 280574, 701435, 982009, 1402870, 1964018, 4910045, 9820090]

約数ペア:

[(1, 9820090), (2, 4910045), (5, 1964018), (7, 1402870), (10, 982009), (14, 701435), (35, 280574), (49, 200410), (70, 140287), (98, 100205), (245, 40082), (343, 28630), (409, 24010), (490, 20041), (686, 14315), (818, 12005), (1715, 5726), (2045, 4802), (2401, 4090), (2863, 3430)]