81980789

素因数分解:

${\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{2837}}^1$

素因数の和:2956

約数の個数: 16

約数和(自身を含む): 93177216

約数和(自身を除く): 11196427

約数列:

[1, 11, 37, 71, 407, 781, 2627, 2837, 28897, 31207, 104969, 201427, 1154659, 2215697, 7452799, 81980789]

約数ペア:

[(1, 81980789), (11, 7452799), (37, 2215697), (71, 1154659), (407, 201427), (781, 104969), (2627, 31207), (2837, 28897)]