21231691

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{4177}}^1$

素因数の和:4230

約数の個数: 16

約数和(自身を含む): 25268544

約数和(自身を除く): 4036853

約数列:

[1, 13, 17, 23, 221, 299, 391, 4177, 5083, 54301, 71009, 96071, 923117, 1248923, 1633207, 21231691]

約数ペア:

[(1, 21231691), (13, 1633207), (17, 1248923), (23, 923117), (221, 96071), (299, 71009), (391, 54301), (4177, 5083)]