18779211

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 31749120

約数和(自身を除く): 12969909

約数列:

[1, 3, 9, 11, 29, 31, 33, 87, 93, 99, 211, 261, 279, 319, 341, 633, 899, 957, 1023, 1899, 2321, 2697, 2871, 3069, 6119, 6541, 6963, 8091, 9889, 18357, 19623, 20889, 29667, 55071, 58869, 67309, 71951, 89001, 189689, 201927, 215853, 569067, 605781, 647559, 1707201, 2086579, 6259737, 18779211]

約数ペア:

[(1, 18779211), (3, 6259737), (9, 2086579), (11, 1707201), (29, 647559), (31, 605781), (33, 569067), (87, 215853), (93, 201927), (99, 189689), (211, 89001), (261, 71951), (279, 67309), (319, 58869), (341, 55071), (633, 29667), (899, 20889), (957, 19623), (1023, 18357), (1899, 9889), (2321, 8091), (2697, 6963), (2871, 6541), (3069, 6119)]