261986481

素因数分解:

$3^4\times {\mathrm{971}}^1\times {\mathrm{3331}}^1$

素因数の和:4314

約数の個数: 20

約数和(自身を含む): 391883184

約数和(自身を除く): 129896703

約数列:

[1, 3, 9, 27, 81, 971, 2913, 3331, 8739, 9993, 26217, 29979, 78651, 89937, 269811, 3234401, 9703203, 29109609, 87328827, 261986481]

約数ペア:

[(1, 261986481), (3, 87328827), (9, 29109609), (27, 9703203), (81, 3234401), (971, 269811), (2913, 89937), (3331, 78651), (8739, 29979), (9993, 26217)]