25200021

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^2\times {\mathrm{59}}^1$

素因数の和:166

約数の個数: 48

約数和(自身を含む): 43614720

約数和(自身を除く): 18414699

約数列:

[1, 3, 7, 11, 21, 33, 43, 59, 77, 129, 177, 231, 301, 413, 473, 649, 903, 1239, 1419, 1849, 1947, 2537, 3311, 4543, 5547, 7611, 9933, 12943, 13629, 17759, 20339, 27907, 38829, 53277, 61017, 83721, 109091, 142373, 195349, 327273, 427119, 586047, 763637, 1200001, 2290911, 3600003, 8400007, 25200021]

約数ペア:

[(1, 25200021), (3, 8400007), (7, 3600003), (11, 2290911), (21, 1200001), (33, 763637), (43, 586047), (59, 427119), (77, 327273), (129, 195349), (177, 142373), (231, 109091), (301, 83721), (413, 61017), (473, 53277), (649, 38829), (903, 27907), (1239, 20339), (1419, 17759), (1849, 13629), (1947, 12943), (2537, 9933), (3311, 7611), (4543, 5547)]