217909415

素因数分解:

$5^1\times {\mathrm{251}}^1\times {\mathrm{401}}^1\times {\mathrm{433}}^1$

素因数の和:1090

約数の個数: 16

約数和(自身を含む): 263795616

約数和(自身を除く): 45886201

約数列:

[1, 5, 251, 401, 433, 1255, 2005, 2165, 100651, 108683, 173633, 503255, 543415, 868165, 43581883, 217909415]

約数ペア:

[(1, 217909415), (5, 43581883), (251, 868165), (401, 543415), (433, 503255), (1255, 173633), (2005, 108683), (2165, 100651)]