21212345

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{463}}^1$

素因数の和:510

約数の個数: 48

約数和(自身を含む): 34276608

約数和(自身を除く): 13064263

約数列:

[1, 5, 7, 11, 17, 35, 49, 55, 77, 85, 119, 187, 245, 385, 463, 539, 595, 833, 935, 1309, 2315, 2695, 3241, 4165, 5093, 6545, 7871, 9163, 16205, 22687, 25465, 35651, 39355, 45815, 55097, 86581, 113435, 178255, 249557, 275485, 385679, 432905, 606067, 1247785, 1928395, 3030335, 4242469, 21212345]

約数ペア:

[(1, 21212345), (5, 4242469), (7, 3030335), (11, 1928395), (17, 1247785), (35, 606067), (49, 432905), (55, 385679), (77, 275485), (85, 249557), (119, 178255), (187, 113435), (245, 86581), (385, 55097), (463, 45815), (539, 39355), (595, 35651), (833, 25465), (935, 22687), (1309, 16205), (2315, 9163), (2695, 7871), (3241, 6545), (4165, 5093)]