1278372784

素因数分解:

$2^4\times {\mathrm{13}}^3\times {\mathrm{41}}^1\times {\mathrm{887}}^1$

素因数の和:975

約数の個数: 80

約数和(自身を含む): 2751698880

約数和(自身を除く): 1473326096

約数列:

[1, 2, 4, 8, 13, 16, 26, 41, 52, 82, 104, 164, 169, 208, 328, 338, 533, 656, 676, 887, 1066, 1352, 1774, 2132, 2197, 2704, 3548, 4264, 4394, 6929, 7096, 8528, 8788, 11531, 13858, 14192, 17576, 23062, 27716, 35152, 36367, 46124, 55432, 72734, 90077, 92248, 110864, 145468, 149903, 180154, 184496, 290936, 299806, 360308, 472771, 581872, 599612, 720616, 945542, 1199224, 1441232, 1891084, 1948739, 2398448, 3782168, 3897478, 6146023, 7564336, 7794956, 12292046, 15589912, 24584092, 31179824, 49168184, 79898299, 98336368, 159796598, 319593196, 639186392, 1278372784]

約数ペア:

[(1, 1278372784), (2, 639186392), (4, 319593196), (8, 159796598), (13, 98336368), (16, 79898299), (26, 49168184), (41, 31179824), (52, 24584092), (82, 15589912), (104, 12292046), (164, 7794956), (169, 7564336), (208, 6146023), (328, 3897478), (338, 3782168), (533, 2398448), (656, 1948739), (676, 1891084), (887, 1441232), (1066, 1199224), (1352, 945542), (1774, 720616), (2132, 599612), (2197, 581872), (2704, 472771), (3548, 360308), (4264, 299806), (4394, 290936), (6929, 184496), (7096, 180154), (8528, 149903), (8788, 145468), (11531, 110864), (13858, 92248), (14192, 90077), (17576, 72734), (23062, 55432), (27716, 46124), (35152, 36367)]