21000340827

素因数分解:

$3^4\times {\mathrm{727}}^1\times {\mathrm{356621}}^1$

素因数の和:357360

約数の個数: 20

約数和(自身を含む): 31414118736

約数和(自身を除く): 10413777909

約数列:

[1, 3, 9, 27, 81, 727, 2181, 6543, 19629, 58887, 356621, 1069863, 3209589, 9628767, 28886301, 259263467, 777790401, 2333371203, 7000113609, 21000340827]

約数ペア:

[(1, 21000340827), (3, 7000113609), (9, 2333371203), (27, 777790401), (81, 259263467), (727, 28886301), (2181, 9628767), (6543, 3209589), (19629, 1069863), (58887, 356621)]