81671409

素因数分解:

$3^4\times {\mathrm{191}}^1\times {\mathrm{5279}}^1$

素因数の和:5482

約数の個数: 20

約数和(自身を含む): 122664960

約数和(自身を除く): 40993551

約数列:

[1, 3, 9, 27, 81, 191, 573, 1719, 5157, 5279, 15471, 15837, 47511, 142533, 427599, 1008289, 3024867, 9074601, 27223803, 81671409]

約数ペア:

[(1, 81671409), (3, 27223803), (9, 9074601), (27, 3024867), (81, 1008289), (191, 427599), (573, 142533), (1719, 47511), (5157, 15837), (5279, 15471)]