20342421

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{79}}^1$

素因数の和:136

約数の個数: 60

約数和(自身を含む): 35661120

約数和(自身を除く): 15318699

約数列:

[1, 3, 9, 11, 17, 27, 33, 51, 79, 81, 99, 153, 187, 237, 289, 297, 459, 561, 711, 867, 869, 891, 1343, 1377, 1683, 2133, 2601, 2607, 3179, 4029, 5049, 6399, 7803, 7821, 9537, 12087, 14773, 15147, 22831, 23409, 23463, 28611, 36261, 44319, 68493, 70389, 85833, 108783, 132957, 205479, 251141, 257499, 398871, 616437, 753423, 1196613, 1849311, 2260269, 6780807, 20342421]

約数ペア:

[(1, 20342421), (3, 6780807), (9, 2260269), (11, 1849311), (17, 1196613), (27, 753423), (33, 616437), (51, 398871), (79, 257499), (81, 251141), (99, 205479), (153, 132957), (187, 108783), (237, 85833), (289, 70389), (297, 68493), (459, 44319), (561, 36261), (711, 28611), (867, 23463), (869, 23409), (891, 22831), (1343, 15147), (1377, 14773), (1683, 12087), (2133, 9537), (2601, 7821), (2607, 7803), (3179, 6399), (4029, 5049)]