21304808

素因数分解:

$2^3\times 7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:199

約数の個数: 96

約数和(自身を含む): 51710400

約数和(自身を除く): 30405592

約数列:

[1, 2, 4, 7, 8, 14, 17, 23, 28, 34, 46, 49, 56, 68, 92, 98, 119, 136, 139, 161, 184, 196, 238, 278, 322, 391, 392, 476, 556, 644, 782, 833, 952, 973, 1112, 1127, 1288, 1564, 1666, 1946, 2254, 2363, 2737, 3128, 3197, 3332, 3892, 4508, 4726, 5474, 6394, 6664, 6811, 7784, 9016, 9452, 10948, 12788, 13622, 16541, 18904, 19159, 21896, 22379, 25576, 27244, 33082, 38318, 44758, 54349, 54488, 66164, 76636, 89516, 108698, 115787, 132328, 153272, 156653, 179032, 217396, 231574, 313306, 380443, 434792, 463148, 626612, 760886, 926296, 1253224, 1521772, 2663101, 3043544, 5326202, 10652404, 21304808]

約数ペア:

[(1, 21304808), (2, 10652404), (4, 5326202), (7, 3043544), (8, 2663101), (14, 1521772), (17, 1253224), (23, 926296), (28, 760886), (34, 626612), (46, 463148), (49, 434792), (56, 380443), (68, 313306), (92, 231574), (98, 217396), (119, 179032), (136, 156653), (139, 153272), (161, 132328), (184, 115787), (196, 108698), (238, 89516), (278, 76636), (322, 66164), (391, 54488), (392, 54349), (476, 44758), (556, 38318), (644, 33082), (782, 27244), (833, 25576), (952, 22379), (973, 21896), (1112, 19159), (1127, 18904), (1288, 16541), (1564, 13622), (1666, 12788), (1946, 10948), (2254, 9452), (2363, 9016), (2737, 7784), (3128, 6811), (3197, 6664), (3332, 6394), (3892, 5474), (4508, 4726)]