1291213728

素因数分解:

$2^5\times 3^2\times 7^1\times {\mathrm{640483}}^1$

素因数の和:640506

約数の個数: 72

約数和(自身を含む): 4196451168

約数和(自身を除く): 2905237440

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 48, 56, 63, 72, 84, 96, 112, 126, 144, 168, 224, 252, 288, 336, 504, 672, 1008, 2016, 640483, 1280966, 1921449, 2561932, 3842898, 4483381, 5123864, 5764347, 7685796, 8966762, 10247728, 11528694, 13450143, 15371592, 17933524, 20495456, 23057388, 26900286, 30743184, 35867048, 40350429, 46114776, 53800572, 61486368, 71734096, 80700858, 92229552, 107601144, 143468192, 161401716, 184459104, 215202288, 322803432, 430404576, 645606864, 1291213728]

約数ペア:

[(1, 1291213728), (2, 645606864), (3, 430404576), (4, 322803432), (6, 215202288), (7, 184459104), (8, 161401716), (9, 143468192), (12, 107601144), (14, 92229552), (16, 80700858), (18, 71734096), (21, 61486368), (24, 53800572), (28, 46114776), (32, 40350429), (36, 35867048), (42, 30743184), (48, 26900286), (56, 23057388), (63, 20495456), (72, 17933524), (84, 15371592), (96, 13450143), (112, 11528694), (126, 10247728), (144, 8966762), (168, 7685796), (224, 5764347), (252, 5123864), (288, 4483381), (336, 3842898), (504, 2561932), (672, 1921449), (1008, 1280966), (2016, 640483)]