20111315

素因数分解:

$5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:168

約数の個数: 48

約数和(自身を含む): 30336768

約数和(自身を除く): 10225453

約数列:

[1, 5, 7, 23, 35, 43, 49, 83, 115, 161, 215, 245, 301, 415, 581, 805, 989, 1127, 1505, 1909, 2107, 2905, 3569, 4067, 4945, 5635, 6923, 9545, 10535, 13363, 17845, 20335, 24983, 34615, 48461, 66815, 82087, 93541, 124915, 174881, 242305, 410435, 467705, 574609, 874405, 2873045, 4022263, 20111315]

約数ペア:

[(1, 20111315), (5, 4022263), (7, 2873045), (23, 874405), (35, 574609), (43, 467705), (49, 410435), (83, 242305), (115, 174881), (161, 124915), (215, 93541), (245, 82087), (301, 66815), (415, 48461), (581, 34615), (805, 24983), (989, 20335), (1127, 17845), (1505, 13363), (1909, 10535), (2107, 9545), (2905, 6923), (3569, 5635), (4067, 4945)]