81321681

素因数分解:

$3^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{13781}}^1$

素因数の和:14072

約数の個数: 16

約数和(自身を含む): 124368768

約数和(自身を除く): 43047087

約数列:

[1, 3, 7, 21, 281, 843, 1967, 5901, 13781, 41343, 96467, 289401, 3872461, 11617383, 27107227, 81321681]

約数ペア:

[(1, 81321681), (3, 27107227), (7, 11617383), (21, 3872461), (281, 289401), (843, 96467), (1967, 41343), (5901, 13781)]