19990773

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{211}}^1$

素因数の和:271

約数の個数: 48

約数和(自身を含む): 33835200

約数和(自身を除く): 13844427

約数列:

[1, 3, 9, 11, 27, 29, 33, 87, 99, 121, 211, 261, 297, 319, 363, 633, 783, 957, 1089, 1899, 2321, 2871, 3267, 3509, 5697, 6119, 6963, 8613, 10527, 18357, 20889, 25531, 31581, 55071, 62667, 67309, 76593, 94743, 165213, 201927, 229779, 605781, 689337, 740399, 1817343, 2221197, 6663591, 19990773]

約数ペア:

[(1, 19990773), (3, 6663591), (9, 2221197), (11, 1817343), (27, 740399), (29, 689337), (33, 605781), (87, 229779), (99, 201927), (121, 165213), (211, 94743), (261, 76593), (297, 67309), (319, 62667), (363, 55071), (633, 31581), (783, 25531), (957, 20889), (1089, 18357), (1899, 10527), (2321, 8613), (2871, 6963), (3267, 6119), (3509, 5697)]