20880987

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{8179}}^1$

素因数の和:8242

約数の個数: 16

約数和(自身を含む): 29840640

約数和(自身を除く): 8959653

約数列:

[1, 3, 23, 37, 69, 111, 851, 2553, 8179, 24537, 188117, 302623, 564351, 907869, 6960329, 20880987]

約数ペア:

[(1, 20880987), (3, 6960329), (23, 907869), (37, 564351), (69, 302623), (111, 188117), (851, 24537), (2553, 8179)]