2811963

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:112

約数の個数: 48

約数和(自身を含む): 4990464

約数和(自身を除く): 2178501

約数列:

[1, 3, 7, 11, 21, 33, 37, 47, 49, 77, 111, 141, 147, 231, 259, 329, 407, 517, 539, 777, 987, 1221, 1551, 1617, 1739, 1813, 2303, 2849, 3619, 5217, 5439, 6909, 8547, 10857, 12173, 19129, 19943, 25333, 36519, 57387, 59829, 75999, 85211, 133903, 255633, 401709, 937321, 2811963]

約数ペア:

[(1, 2811963), (3, 937321), (7, 401709), (11, 255633), (21, 133903), (33, 85211), (37, 75999), (47, 59829), (49, 57387), (77, 36519), (111, 25333), (141, 19943), (147, 19129), (231, 12173), (259, 10857), (329, 8547), (407, 6909), (517, 5439), (539, 5217), (777, 3619), (987, 2849), (1221, 2303), (1551, 1813), (1617, 1739)]