20693907

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1$

素因数の和:177

約数の個数: 64

約数和(自身を含む): 36288000

約数和(自身を除く): 15594093

約数列:

[1, 3, 9, 13, 19, 27, 29, 39, 57, 87, 107, 117, 171, 247, 261, 321, 351, 377, 513, 551, 741, 783, 963, 1131, 1391, 1653, 2033, 2223, 2889, 3103, 3393, 4173, 4959, 6099, 6669, 7163, 9309, 10179, 12519, 14877, 18297, 21489, 26429, 27927, 37557, 40339, 54891, 58957, 64467, 79287, 83781, 121017, 176871, 193401, 237861, 363051, 530613, 713583, 766441, 1089153, 1591839, 2299323, 6897969, 20693907]

約数ペア:

[(1, 20693907), (3, 6897969), (9, 2299323), (13, 1591839), (19, 1089153), (27, 766441), (29, 713583), (39, 530613), (57, 363051), (87, 237861), (107, 193401), (117, 176871), (171, 121017), (247, 83781), (261, 79287), (321, 64467), (351, 58957), (377, 54891), (513, 40339), (551, 37557), (741, 27927), (783, 26429), (963, 21489), (1131, 18297), (1391, 14877), (1653, 12519), (2033, 10179), (2223, 9309), (2889, 7163), (3103, 6669), (3393, 6099), (4173, 4959)]