12005721

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 21700224

約数和(自身を除く): 9694503

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 107, 117, 137, 273, 321, 411, 749, 819, 959, 963, 1233, 1391, 1781, 2247, 2877, 4173, 5343, 6741, 8631, 9737, 12467, 12519, 14659, 16029, 29211, 37401, 43977, 87633, 102613, 112203, 131931, 190567, 307839, 571701, 923517, 1333969, 1715103, 4001907, 12005721]

約数ペア:

[(1, 12005721), (3, 4001907), (7, 1715103), (9, 1333969), (13, 923517), (21, 571701), (39, 307839), (63, 190567), (91, 131931), (107, 112203), (117, 102613), (137, 87633), (273, 43977), (321, 37401), (411, 29211), (749, 16029), (819, 14659), (959, 12519), (963, 12467), (1233, 9737), (1391, 8631), (1781, 6741), (2247, 5343), (2877, 4173)]