21331808

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1$

素因数の和:351

約数の個数: 48

約数和(自身を含む): 43817760

約数和(自身を除く): 22485952

約数列:

[1, 2, 4, 8, 16, 32, 41, 71, 82, 142, 164, 229, 284, 328, 458, 568, 656, 916, 1136, 1312, 1832, 2272, 2911, 3664, 5822, 7328, 9389, 11644, 16259, 18778, 23288, 32518, 37556, 46576, 65036, 75112, 93152, 130072, 150224, 260144, 300448, 520288, 666619, 1333238, 2666476, 5332952, 10665904, 21331808]

約数ペア:

[(1, 21331808), (2, 10665904), (4, 5332952), (8, 2666476), (16, 1333238), (32, 666619), (41, 520288), (71, 300448), (82, 260144), (142, 150224), (164, 130072), (229, 93152), (284, 75112), (328, 65036), (458, 46576), (568, 37556), (656, 32518), (916, 23288), (1136, 18778), (1312, 16259), (1832, 11644), (2272, 9389), (2911, 7328), (3664, 5822)]