21784928

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{311}}^1$

素因数の和:531

約数の個数: 48

約数和(自身を含む): 47174400

約数和(自身を除く): 25389472

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 176, 199, 311, 352, 398, 622, 796, 1244, 1592, 2189, 2488, 3184, 3421, 4378, 4976, 6368, 6842, 8756, 9952, 13684, 17512, 27368, 35024, 54736, 61889, 70048, 109472, 123778, 247556, 495112, 680779, 990224, 1361558, 1980448, 2723116, 5446232, 10892464, 21784928]

約数ペア:

[(1, 21784928), (2, 10892464), (4, 5446232), (8, 2723116), (11, 1980448), (16, 1361558), (22, 990224), (32, 680779), (44, 495112), (88, 247556), (176, 123778), (199, 109472), (311, 70048), (352, 61889), (398, 54736), (622, 35024), (796, 27368), (1244, 17512), (1592, 13684), (2189, 9952), (2488, 8756), (3184, 6842), (3421, 6368), (4378, 4976)]