80256987

素因数分解:

$3^4\times {\mathrm{157}}^1\times {\mathrm{6311}}^1$

素因数の和:6480

約数の個数: 20

約数和(自身を含む): 120672816

約数和(自身を除く): 40415829

約数列:

[1, 3, 9, 27, 81, 157, 471, 1413, 4239, 6311, 12717, 18933, 56799, 170397, 511191, 990827, 2972481, 8917443, 26752329, 80256987]

約数ペア:

[(1, 80256987), (3, 26752329), (9, 8917443), (27, 2972481), (81, 990827), (157, 511191), (471, 170397), (1413, 56799), (4239, 18933), (6311, 12717)]