28021869

素因数分解:

$3^4\times {\mathrm{457}}^1\times {\mathrm{757}}^1$

素因数の和:1226

約数の個数: 20

約数和(自身を含む): 42006844

約数和(自身を除く): 13984975

約数列:

[1, 3, 9, 27, 81, 457, 757, 1371, 2271, 4113, 6813, 12339, 20439, 37017, 61317, 345949, 1037847, 3113541, 9340623, 28021869]

約数ペア:

[(1, 28021869), (3, 9340623), (9, 3113541), (27, 1037847), (81, 345949), (457, 61317), (757, 37017), (1371, 20439), (2271, 12339), (4113, 6813)]