26781993

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 46500480

約数和(自身を除く): 19718487

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 107, 137, 203, 261, 321, 411, 609, 749, 959, 963, 1233, 1827, 2247, 2877, 3103, 3973, 6741, 8631, 9309, 11919, 14659, 21721, 27811, 27927, 35757, 43977, 65163, 83433, 102613, 131931, 195489, 250299, 307839, 425111, 923517, 1275333, 2975777, 3825999, 8927331, 26781993]

約数ペア:

[(1, 26781993), (3, 8927331), (7, 3825999), (9, 2975777), (21, 1275333), (29, 923517), (63, 425111), (87, 307839), (107, 250299), (137, 195489), (203, 131931), (261, 102613), (321, 83433), (411, 65163), (609, 43977), (749, 35757), (959, 27927), (963, 27811), (1233, 21721), (1827, 14659), (2247, 11919), (2877, 9309), (3103, 8631), (3973, 6741)]