20904576

素因数分解:

$2^7\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1$

素因数の和:143

約数の個数: 192

約数和(自身を含む): 71163360

約数和(自身を除く): 50258784

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 16, 21, 22, 24, 28, 32, 33, 42, 44, 48, 49, 56, 64, 66, 77, 84, 88, 96, 98, 101, 112, 128, 132, 147, 154, 168, 176, 192, 196, 202, 224, 231, 264, 294, 303, 308, 336, 352, 384, 392, 404, 448, 462, 528, 539, 588, 606, 616, 672, 704, 707, 784, 808, 896, 924, 1056, 1078, 1111, 1176, 1212, 1232, 1344, 1408, 1414, 1568, 1616, 1617, 1848, 2112, 2121, 2156, 2222, 2352, 2424, 2464, 2688, 2828, 3136, 3232, 3234, 3333, 3696, 4224, 4242, 4312, 4444, 4704, 4848, 4928, 4949, 5656, 6272, 6464, 6468, 6666, 7392, 7777, 8484, 8624, 8888, 9408, 9696, 9856, 9898, 11312, 12928, 12936, 13332, 14784, 14847, 15554, 16968, 17248, 17776, 18816, 19392, 19796, 22624, 23331, 25872, 26664, 29568, 29694, 31108, 33936, 34496, 35552, 38784, 39592, 45248, 46662, 51744, 53328, 54439, 59388, 62216, 67872, 68992, 71104, 79184, 90496, 93324, 103488, 106656, 108878, 118776, 124432, 135744, 142208, 158368, 163317, 186648, 206976, 213312, 217756, 237552, 248864, 271488, 316736, 326634, 373296, 426624, 435512, 475104, 497728, 633472, 653268, 746592, 871024, 950208, 995456, 1306536, 1493184, 1742048, 1900416, 2613072, 2986368, 3484096, 5226144, 6968192, 10452288, 20904576]

約数ペア:

[(1, 20904576), (2, 10452288), (3, 6968192), (4, 5226144), (6, 3484096), (7, 2986368), (8, 2613072), (11, 1900416), (12, 1742048), (14, 1493184), (16, 1306536), (21, 995456), (22, 950208), (24, 871024), (28, 746592), (32, 653268), (33, 633472), (42, 497728), (44, 475104), (48, 435512), (49, 426624), (56, 373296), (64, 326634), (66, 316736), (77, 271488), (84, 248864), (88, 237552), (96, 217756), (98, 213312), (101, 206976), (112, 186648), (128, 163317), (132, 158368), (147, 142208), (154, 135744), (168, 124432), (176, 118776), (192, 108878), (196, 106656), (202, 103488), (224, 93324), (231, 90496), (264, 79184), (294, 71104), (303, 68992), (308, 67872), (336, 62216), (352, 59388), (384, 54439), (392, 53328), (404, 51744), (448, 46662), (462, 45248), (528, 39592), (539, 38784), (588, 35552), (606, 34496), (616, 33936), (672, 31108), (704, 29694), (707, 29568), (784, 26664), (808, 25872), (896, 23331), (924, 22624), (1056, 19796), (1078, 19392), (1111, 18816), (1176, 17776), (1212, 17248), (1232, 16968), (1344, 15554), (1408, 14847), (1414, 14784), (1568, 13332), (1616, 12936), (1617, 12928), (1848, 11312), (2112, 9898), (2121, 9856), (2156, 9696), (2222, 9408), (2352, 8888), (2424, 8624), (2464, 8484), (2688, 7777), (2828, 7392), (3136, 6666), (3232, 6468), (3234, 6464), (3333, 6272), (3696, 5656), (4224, 4949), (4242, 4928), (4312, 4848), (4444, 4704)]