20995128

素因数分解:

$2^3\times 3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{541}}^1$

素因数の和:578

約数の個数: 144

約数和(自身を含む): 72291960

約数和(自身を除く): 51296832

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 14, 18, 21, 22, 24, 28, 33, 36, 42, 44, 49, 56, 63, 66, 72, 77, 84, 88, 98, 99, 126, 132, 147, 154, 168, 196, 198, 231, 252, 264, 294, 308, 392, 396, 441, 462, 504, 539, 541, 588, 616, 693, 792, 882, 924, 1078, 1082, 1176, 1386, 1617, 1623, 1764, 1848, 2156, 2164, 2772, 3234, 3246, 3528, 3787, 4312, 4328, 4851, 4869, 5544, 5951, 6468, 6492, 7574, 9702, 9738, 11361, 11902, 12936, 12984, 15148, 17853, 19404, 19476, 22722, 23804, 26509, 30296, 34083, 35706, 38808, 38952, 41657, 45444, 47608, 53018, 53559, 68166, 71412, 79527, 83314, 90888, 106036, 107118, 124971, 136332, 142824, 159054, 166628, 212072, 214236, 238581, 249942, 272664, 291599, 318108, 333256, 374913, 428472, 477162, 499884, 583198, 636216, 749826, 874797, 954324, 999768, 1166396, 1499652, 1749594, 1908648, 2332792, 2624391, 2999304, 3499188, 5248782, 6998376, 10497564, 20995128]

約数ペア:

[(1, 20995128), (2, 10497564), (3, 6998376), (4, 5248782), (6, 3499188), (7, 2999304), (8, 2624391), (9, 2332792), (11, 1908648), (12, 1749594), (14, 1499652), (18, 1166396), (21, 999768), (22, 954324), (24, 874797), (28, 749826), (33, 636216), (36, 583198), (42, 499884), (44, 477162), (49, 428472), (56, 374913), (63, 333256), (66, 318108), (72, 291599), (77, 272664), (84, 249942), (88, 238581), (98, 214236), (99, 212072), (126, 166628), (132, 159054), (147, 142824), (154, 136332), (168, 124971), (196, 107118), (198, 106036), (231, 90888), (252, 83314), (264, 79527), (294, 71412), (308, 68166), (392, 53559), (396, 53018), (441, 47608), (462, 45444), (504, 41657), (539, 38952), (541, 38808), (588, 35706), (616, 34083), (693, 30296), (792, 26509), (882, 23804), (924, 22722), (1078, 19476), (1082, 19404), (1176, 17853), (1386, 15148), (1617, 12984), (1623, 12936), (1764, 11902), (1848, 11361), (2156, 9738), (2164, 9702), (2772, 7574), (3234, 6492), (3246, 6468), (3528, 5951), (3787, 5544), (4312, 4869), (4328, 4851)]