28668081

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{19867}}^1$

素因数の和:19920

約数の個数: 16

約数和(自身を含む): 42279104

約数和(自身を除く): 13611023

約数列:

[1, 3, 13, 37, 39, 111, 481, 1443, 19867, 59601, 258271, 735079, 774813, 2205237, 9556027, 28668081]

約数ペア:

[(1, 28668081), (3, 9556027), (13, 2205237), (37, 774813), (39, 735079), (111, 258271), (481, 59601), (1443, 19867)]