20753920

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^2\times {\mathrm{67}}^1$

素因数の和:112

約数の個数: 120

約数和(自身を含む): 55512072

約数和(自身を除く): 34758152

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 67, 80, 88, 110, 121, 128, 134, 160, 176, 220, 242, 256, 268, 320, 335, 352, 440, 484, 512, 536, 605, 640, 670, 704, 737, 880, 968, 1072, 1210, 1280, 1340, 1408, 1474, 1760, 1936, 2144, 2420, 2560, 2680, 2816, 2948, 3520, 3685, 3872, 4288, 4840, 5360, 5632, 5896, 7040, 7370, 7744, 8107, 8576, 9680, 10720, 11792, 14080, 14740, 15488, 16214, 17152, 19360, 21440, 23584, 28160, 29480, 30976, 32428, 34304, 38720, 40535, 42880, 47168, 58960, 61952, 64856, 77440, 81070, 85760, 94336, 117920, 129712, 154880, 162140, 171520, 188672, 235840, 259424, 309760, 324280, 377344, 471680, 518848, 648560, 943360, 1037696, 1297120, 1886720, 2075392, 2594240, 4150784, 5188480, 10376960, 20753920]

約数ペア:

[(1, 20753920), (2, 10376960), (4, 5188480), (5, 4150784), (8, 2594240), (10, 2075392), (11, 1886720), (16, 1297120), (20, 1037696), (22, 943360), (32, 648560), (40, 518848), (44, 471680), (55, 377344), (64, 324280), (67, 309760), (80, 259424), (88, 235840), (110, 188672), (121, 171520), (128, 162140), (134, 154880), (160, 129712), (176, 117920), (220, 94336), (242, 85760), (256, 81070), (268, 77440), (320, 64856), (335, 61952), (352, 58960), (440, 47168), (484, 42880), (512, 40535), (536, 38720), (605, 34304), (640, 32428), (670, 30976), (704, 29480), (737, 28160), (880, 23584), (968, 21440), (1072, 19360), (1210, 17152), (1280, 16214), (1340, 15488), (1408, 14740), (1474, 14080), (1760, 11792), (1936, 10720), (2144, 9680), (2420, 8576), (2560, 8107), (2680, 7744), (2816, 7370), (2948, 7040), (3520, 5896), (3685, 5632), (3872, 5360), (4288, 4840)]