28478120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1097}}^1$

素因数の和:1178

約数の個数: 64

約数和(自身を含む): 71150400

約数和(自身を除く): 42672280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 59, 88, 110, 118, 220, 236, 295, 440, 472, 590, 649, 1097, 1180, 1298, 2194, 2360, 2596, 3245, 4388, 5192, 5485, 6490, 8776, 10970, 12067, 12980, 21940, 24134, 25960, 43880, 48268, 60335, 64723, 96536, 120670, 129446, 241340, 258892, 323615, 482680, 517784, 647230, 711953, 1294460, 1423906, 2588920, 2847812, 3559765, 5695624, 7119530, 14239060, 28478120]

約数ペア:

[(1, 28478120), (2, 14239060), (4, 7119530), (5, 5695624), (8, 3559765), (10, 2847812), (11, 2588920), (20, 1423906), (22, 1294460), (40, 711953), (44, 647230), (55, 517784), (59, 482680), (88, 323615), (110, 258892), (118, 241340), (220, 129446), (236, 120670), (295, 96536), (440, 64723), (472, 60335), (590, 48268), (649, 43880), (1097, 25960), (1180, 24134), (1298, 21940), (2194, 12980), (2360, 12067), (2596, 10970), (3245, 8776), (4388, 6490), (5192, 5485)]