20707568

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{263}}^1$

素因数の和:334

約数の個数: 80

約数和(自身を含む): 49758720

約数和(自身を除く): 29051152

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 37, 38, 56, 74, 76, 112, 133, 148, 152, 259, 263, 266, 296, 304, 518, 526, 532, 592, 703, 1036, 1052, 1064, 1406, 1841, 2072, 2104, 2128, 2812, 3682, 4144, 4208, 4921, 4997, 5624, 7364, 9731, 9842, 9994, 11248, 14728, 19462, 19684, 19988, 29456, 34979, 38924, 39368, 39976, 68117, 69958, 77848, 78736, 79952, 136234, 139916, 155696, 184889, 272468, 279832, 369778, 544936, 559664, 739556, 1089872, 1294223, 1479112, 2588446, 2958224, 5176892, 10353784, 20707568]

約数ペア:

[(1, 20707568), (2, 10353784), (4, 5176892), (7, 2958224), (8, 2588446), (14, 1479112), (16, 1294223), (19, 1089872), (28, 739556), (37, 559664), (38, 544936), (56, 369778), (74, 279832), (76, 272468), (112, 184889), (133, 155696), (148, 139916), (152, 136234), (259, 79952), (263, 78736), (266, 77848), (296, 69958), (304, 68117), (518, 39976), (526, 39368), (532, 38924), (592, 34979), (703, 29456), (1036, 19988), (1052, 19684), (1064, 19462), (1406, 14728), (1841, 11248), (2072, 9994), (2104, 9842), (2128, 9731), (2812, 7364), (3682, 5624), (4144, 4997), (4208, 4921)]