20912551

素因数分解:

${\mathrm{11}}^2\times {\mathrm{401}}^1\times {\mathrm{431}}^1$

素因数の和:854

約数の個数: 12

約数和(自身を含む): 23097312

約数和(自身を除く): 2184761

約数列:

[1, 11, 121, 401, 431, 4411, 4741, 48521, 52151, 172831, 1901141, 20912551]

約数ペア:

[(1, 20912551), (11, 1901141), (121, 172831), (401, 52151), (431, 48521), (4411, 4741)]