20973121

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{2207}}^1$

素因数の和:2280

約数の個数: 16

約数和(自身を含む): 24482304

約数和(自身を除く): 3509183

約数列:

[1, 13, 17, 43, 221, 559, 731, 2207, 9503, 28691, 37519, 94901, 487747, 1233713, 1613317, 20973121]

約数ペア:

[(1, 20973121), (13, 1613317), (17, 1233713), (43, 487747), (221, 94901), (559, 37519), (731, 28691), (2207, 9503)]