21109121

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{719}}^1$

素因数の和:904

約数の個数: 16

約数和(自身を含む): 24572160

約数和(自身を除く): 3463039

約数列:

[1, 11, 17, 157, 187, 719, 1727, 2669, 7909, 12223, 29359, 112883, 134453, 1241713, 1919011, 21109121]

約数ペア:

[(1, 21109121), (11, 1919011), (17, 1241713), (157, 134453), (187, 112883), (719, 29359), (1727, 12223), (2669, 7909)]