21480018

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{4027}}^1$

素因数の和:4166

約数の個数: 32

約数和(自身を含む): 49496064

約数和(自身を除く): 28016046

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 127, 254, 381, 762, 889, 1778, 2667, 4027, 5334, 8054, 12081, 24162, 28189, 56378, 84567, 169134, 511429, 1022858, 1534287, 3068574, 3580003, 7160006, 10740009, 21480018]

約数ペア:

[(1, 21480018), (2, 10740009), (3, 7160006), (6, 3580003), (7, 3068574), (14, 1534287), (21, 1022858), (42, 511429), (127, 169134), (254, 84567), (381, 56378), (762, 28189), (889, 24162), (1778, 12081), (2667, 8054), (4027, 5334)]