278323479

素因数分解:

$3^3\times 7^2\times {\mathrm{71}}^1\times {\mathrm{2963}}^1$

素因数の和:3057

約数の個数: 48

約数和(自身を含む): 486570240

約数和(自身を除く): 208246761

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 71, 147, 189, 213, 441, 497, 639, 1323, 1491, 1917, 2963, 3479, 4473, 8889, 10437, 13419, 20741, 26667, 31311, 62223, 80001, 93933, 145187, 186669, 210373, 435561, 560007, 631119, 1306683, 1472611, 1893357, 3920049, 4417833, 5680071, 10308277, 13253499, 30924831, 39760497, 92774493, 278323479]

約数ペア:

[(1, 278323479), (3, 92774493), (7, 39760497), (9, 30924831), (21, 13253499), (27, 10308277), (49, 5680071), (63, 4417833), (71, 3920049), (147, 1893357), (189, 1472611), (213, 1306683), (441, 631119), (497, 560007), (639, 435561), (1323, 210373), (1491, 186669), (1917, 145187), (2963, 93933), (3479, 80001), (4473, 62223), (8889, 31311), (10437, 26667), (13419, 20741)]