51781436

素因数分解:

$2^2\times 7^2\times {\mathrm{61}}^2\times {\mathrm{71}}^1$

素因数の和:211

約数の個数: 54

約数和(自身を含む): 108678024

約数和(自身を除く): 56896588

約数列:

[1, 2, 4, 7, 14, 28, 49, 61, 71, 98, 122, 142, 196, 244, 284, 427, 497, 854, 994, 1708, 1988, 2989, 3479, 3721, 4331, 5978, 6958, 7442, 8662, 11956, 13916, 14884, 17324, 26047, 30317, 52094, 60634, 104188, 121268, 182329, 212219, 264191, 364658, 424438, 528382, 729316, 848876, 1056764, 1849337, 3698674, 7397348, 12945359, 25890718, 51781436]

約数ペア:

[(1, 51781436), (2, 25890718), (4, 12945359), (7, 7397348), (14, 3698674), (28, 1849337), (49, 1056764), (61, 848876), (71, 729316), (98, 528382), (122, 424438), (142, 364658), (196, 264191), (244, 212219), (284, 182329), (427, 121268), (497, 104188), (854, 60634), (994, 52094), (1708, 30317), (1988, 26047), (2989, 17324), (3479, 14884), (3721, 13916), (4331, 11956), (5978, 8662), (6958, 7442)]