20778978

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 47628288

約数和(自身を除く): 26849310

約数列:

[1, 2, 3, 6, 11, 22, 33, 37, 66, 67, 74, 111, 127, 134, 201, 222, 254, 381, 402, 407, 737, 762, 814, 1221, 1397, 1474, 2211, 2442, 2479, 2794, 4191, 4422, 4699, 4958, 7437, 8382, 8509, 9398, 14097, 14874, 17018, 25527, 27269, 28194, 51054, 51689, 54538, 81807, 93599, 103378, 155067, 163614, 187198, 280797, 310134, 314833, 561594, 629666, 944499, 1888998, 3463163, 6926326, 10389489, 20778978]

約数ペア:

[(1, 20778978), (2, 10389489), (3, 6926326), (6, 3463163), (11, 1888998), (22, 944499), (33, 629666), (37, 561594), (66, 314833), (67, 310134), (74, 280797), (111, 187198), (127, 163614), (134, 155067), (201, 103378), (222, 93599), (254, 81807), (381, 54538), (402, 51689), (407, 51054), (737, 28194), (762, 27269), (814, 25527), (1221, 17018), (1397, 14874), (1474, 14097), (2211, 9398), (2442, 8509), (2479, 8382), (2794, 7437), (4191, 4958), (4422, 4699)]