20402984

素因数分解:

$2^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:322

約数の個数: 64

約数和(自身を含む): 46147200

約数和(自身を除く): 25744216

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 43, 56, 74, 86, 148, 172, 229, 259, 296, 301, 344, 458, 518, 602, 916, 1036, 1204, 1591, 1603, 1832, 2072, 2408, 3182, 3206, 6364, 6412, 8473, 9847, 11137, 12728, 12824, 16946, 19694, 22274, 33892, 39388, 44548, 59311, 67784, 68929, 78776, 89096, 118622, 137858, 237244, 275716, 364339, 474488, 551432, 728678, 1457356, 2550373, 2914712, 5100746, 10201492, 20402984]

約数ペア:

[(1, 20402984), (2, 10201492), (4, 5100746), (7, 2914712), (8, 2550373), (14, 1457356), (28, 728678), (37, 551432), (43, 474488), (56, 364339), (74, 275716), (86, 237244), (148, 137858), (172, 118622), (229, 89096), (259, 78776), (296, 68929), (301, 67784), (344, 59311), (458, 44548), (518, 39388), (602, 33892), (916, 22274), (1036, 19694), (1204, 16946), (1591, 12824), (1603, 12728), (1832, 11137), (2072, 9847), (2408, 8473), (3182, 6412), (3206, 6364)]