21228095

素因数分解:

$5^1\times 7^1\times {\mathrm{761}}^1\times {\mathrm{797}}^1$

素因数の和:1570

約数の個数: 16

約数和(自身を含む): 29187648

約数和(自身を除く): 7959553

約数列:

[1, 5, 7, 35, 761, 797, 3805, 3985, 5327, 5579, 26635, 27895, 606517, 3032585, 4245619, 21228095]

約数ペア:

[(1, 21228095), (5, 4245619), (7, 3032585), (35, 606517), (761, 27895), (797, 26635), (3805, 5579), (3985, 5327)]