21429039

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{379}}^1\times {\mathrm{401}}^1$

素因数の和:830

約数の個数: 16

約数和(自身を含む): 29329920

約数和(自身を除く): 7900881

約数列:

[1, 3, 47, 141, 379, 401, 1137, 1203, 17813, 18847, 53439, 56541, 151979, 455937, 7143013, 21429039]

約数ペア:

[(1, 21429039), (3, 7143013), (47, 455937), (141, 151979), (379, 56541), (401, 53439), (1137, 18847), (1203, 17813)]