64721187

素因数分解:

$3^4\times {\mathrm{337}}^1\times {\mathrm{2371}}^1$

素因数の和:2720

約数の個数: 20

約数和(自身を含む): 97010056

約数和(自身を除く): 32288869

約数列:

[1, 3, 9, 27, 81, 337, 1011, 2371, 3033, 7113, 9099, 21339, 27297, 64017, 192051, 799027, 2397081, 7191243, 21573729, 64721187]

約数ペア:

[(1, 64721187), (3, 21573729), (9, 7191243), (27, 2397081), (81, 799027), (337, 192051), (1011, 64017), (2371, 27297), (3033, 21339), (7113, 9099)]