67720205

素因数分解:

$5^1\times 7^4\times {\mathrm{5641}}^1$

素因数の和:5674

約数の個数: 20

約数和(自身を含む): 94819452

約数和(自身を除く): 27099247

約数列:

[1, 5, 7, 35, 49, 245, 343, 1715, 2401, 5641, 12005, 28205, 39487, 197435, 276409, 1382045, 1934863, 9674315, 13544041, 67720205]

約数ペア:

[(1, 67720205), (5, 13544041), (7, 9674315), (35, 1934863), (49, 1382045), (245, 276409), (343, 197435), (1715, 39487), (2401, 28205), (5641, 12005)]