7215005

素因数分解:

$5^1\times 7^4\times {\mathrm{601}}^1$

素因数の和:634

約数の個数: 20

約数和(自身を含む): 10117212

約数和(自身を除く): 2902207

約数列:

[1, 5, 7, 35, 49, 245, 343, 601, 1715, 2401, 3005, 4207, 12005, 21035, 29449, 147245, 206143, 1030715, 1443001, 7215005]

約数ペア:

[(1, 7215005), (5, 1443001), (7, 1030715), (35, 206143), (49, 147245), (245, 29449), (343, 21035), (601, 12005), (1715, 4207), (2401, 3005)]