19506305

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{997}}^1$

素因数の和:1065

約数の個数: 32

約数和(自身を含む): 29508864

約数和(自身を除く): 10002559

約数列:

[1, 5, 7, 13, 35, 43, 65, 91, 215, 301, 455, 559, 997, 1505, 2795, 3913, 4985, 6979, 12961, 19565, 34895, 42871, 64805, 90727, 214355, 300097, 453635, 557323, 1500485, 2786615, 3901261, 19506305]

約数ペア:

[(1, 19506305), (5, 3901261), (7, 2786615), (13, 1500485), (35, 557323), (43, 453635), (65, 300097), (91, 214355), (215, 90727), (301, 64805), (455, 42871), (559, 34895), (997, 19565), (1505, 12961), (2795, 6979), (3913, 4985)]