81319308

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{971}}^1\times {\mathrm{997}}^1$

素因数の和:1982

約数の個数: 48

約数和(自身を含む): 217292544

約数和(自身を除く): 135973236

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 971, 997, 1942, 1994, 2913, 2991, 3884, 3988, 5826, 5982, 6797, 6979, 11652, 11964, 13594, 13958, 20391, 20937, 27188, 27916, 40782, 41874, 81564, 83748, 968087, 1936174, 2904261, 3872348, 5808522, 6776609, 11617044, 13553218, 20329827, 27106436, 40659654, 81319308]

約数ペア:

[(1, 81319308), (2, 40659654), (3, 27106436), (4, 20329827), (6, 13553218), (7, 11617044), (12, 6776609), (14, 5808522), (21, 3872348), (28, 2904261), (42, 1936174), (84, 968087), (971, 83748), (997, 81564), (1942, 41874), (1994, 40782), (2913, 27916), (2991, 27188), (3884, 20937), (3988, 20391), (5826, 13958), (5982, 13594), (6797, 11964), (6979, 11652)]