8001999

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:132

約数の個数: 48

約数和(自身を含む): 13178880

約数和(自身を除く): 5176881

約数列:

[1, 3, 9, 23, 29, 31, 43, 69, 87, 93, 129, 207, 261, 279, 387, 667, 713, 899, 989, 1247, 1333, 2001, 2139, 2697, 2967, 3741, 3999, 6003, 6417, 8091, 8901, 11223, 11997, 20677, 28681, 30659, 38657, 62031, 86043, 91977, 115971, 186093, 258129, 275931, 347913, 889111, 2667333, 8001999]

約数ペア:

[(1, 8001999), (3, 2667333), (9, 889111), (23, 347913), (29, 275931), (31, 258129), (43, 186093), (69, 115971), (87, 91977), (93, 86043), (129, 62031), (207, 38657), (261, 30659), (279, 28681), (387, 20677), (667, 11997), (713, 11223), (899, 8901), (989, 8091), (1247, 6417), (1333, 6003), (2001, 3999), (2139, 3741), (2697, 2967)]