81728313

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1\times {\mathrm{1493}}^1$

素因数の和:1824

約数の個数: 16

約数和(自身を含む): 111010176

約数和(自身を除く): 29281863

約数列:

[1, 3, 71, 213, 257, 771, 1493, 4479, 18247, 54741, 106003, 318009, 383701, 1151103, 27242771, 81728313]

約数ペア:

[(1, 81728313), (3, 27242771), (71, 1151103), (213, 383701), (257, 318009), (771, 106003), (1493, 54741), (4479, 18247)]