20695212

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{461}}^1$

素因数の和:543

約数の個数: 72

約数和(自身を含む): 55495440

約数和(自身を除く): 34800228

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 43, 58, 86, 87, 116, 129, 172, 174, 258, 261, 348, 387, 461, 516, 522, 774, 922, 1044, 1247, 1383, 1548, 1844, 2494, 2766, 3741, 4149, 4988, 5532, 7482, 8298, 11223, 13369, 14964, 16596, 19823, 22446, 26738, 39646, 40107, 44892, 53476, 59469, 79292, 80214, 118938, 120321, 160428, 178407, 237876, 240642, 356814, 481284, 574867, 713628, 1149734, 1724601, 2299468, 3449202, 5173803, 6898404, 10347606, 20695212]

約数ペア:

[(1, 20695212), (2, 10347606), (3, 6898404), (4, 5173803), (6, 3449202), (9, 2299468), (12, 1724601), (18, 1149734), (29, 713628), (36, 574867), (43, 481284), (58, 356814), (86, 240642), (87, 237876), (116, 178407), (129, 160428), (172, 120321), (174, 118938), (258, 80214), (261, 79292), (348, 59469), (387, 53476), (461, 44892), (516, 40107), (522, 39646), (774, 26738), (922, 22446), (1044, 19823), (1247, 16596), (1383, 14964), (1548, 13369), (1844, 11223), (2494, 8298), (2766, 7482), (3741, 5532), (4149, 4988)]