20015457

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{7877}}^1$

素因数の和:7909

約数の個数: 24

約数和(自身を含む): 33528768

約数和(自身を除く): 13513311

約数列:

[1, 3, 7, 11, 21, 33, 77, 121, 231, 363, 847, 2541, 7877, 23631, 55139, 86647, 165417, 259941, 606529, 953117, 1819587, 2859351, 6671819, 20015457]

約数ペア:

[(1, 20015457), (3, 6671819), (7, 2859351), (11, 1819587), (21, 953117), (33, 606529), (77, 259941), (121, 165417), (231, 86647), (363, 55139), (847, 23631), (2541, 7877)]