20850025

素因数分解:

$5^2\times 7^1\times {\mathrm{283}}^1\times {\mathrm{421}}^1$

素因数の和:721

約数の個数: 24

約数和(自身を含む): 29722304

約数和(自身を除く): 8872279

約数列:

[1, 5, 7, 25, 35, 175, 283, 421, 1415, 1981, 2105, 2947, 7075, 9905, 10525, 14735, 49525, 73675, 119143, 595715, 834001, 2978575, 4170005, 20850025]

約数ペア:

[(1, 20850025), (5, 4170005), (7, 2978575), (25, 834001), (35, 595715), (175, 119143), (283, 73675), (421, 49525), (1415, 14735), (1981, 10525), (2105, 9905), (2947, 7075)]