20405728889

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{12281}}^1$

素因数の和:12382

約数の個数: 48

約数和(自身を含む): 27319098240

約数和(自身を除く): 6913369351

約数列:

[1, 7, 13, 19, 31, 91, 133, 217, 247, 403, 589, 961, 1729, 2821, 4123, 6727, 7657, 12281, 12493, 18259, 53599, 85967, 87451, 127813, 159653, 233339, 237367, 380711, 1117571, 1633373, 1661569, 2664977, 3033407, 4949243, 7233509, 11802041, 21233849, 34644701, 50634563, 82614287, 94035617, 153426533, 224238779, 658249319, 1073985731, 1569671453, 2915104127, 20405728889]

約数ペア:

[(1, 20405728889), (7, 2915104127), (13, 1569671453), (19, 1073985731), (31, 658249319), (91, 224238779), (133, 153426533), (217, 94035617), (247, 82614287), (403, 50634563), (589, 34644701), (961, 21233849), (1729, 11802041), (2821, 7233509), (4123, 4949243), (6727, 3033407), (7657, 2664977), (12281, 1661569), (12493, 1633373), (18259, 1117571), (53599, 380711), (85967, 237367), (87451, 233339), (127813, 159653)]