19521920

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:136

約数の個数: 128

約数和(自身を含む): 52876800

約数和(自身を除く): 33354880

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 47, 55, 59, 64, 80, 88, 94, 110, 118, 128, 160, 176, 188, 220, 235, 236, 295, 320, 352, 376, 440, 470, 472, 517, 590, 640, 649, 704, 752, 880, 940, 944, 1034, 1180, 1298, 1408, 1504, 1760, 1880, 1888, 2068, 2360, 2585, 2596, 2773, 3008, 3245, 3520, 3760, 3776, 4136, 4720, 5170, 5192, 5546, 6016, 6490, 7040, 7520, 7552, 8272, 9440, 10340, 10384, 11092, 12980, 13865, 15040, 16544, 18880, 20680, 20768, 22184, 25960, 27730, 30080, 30503, 33088, 37760, 41360, 41536, 44368, 51920, 55460, 61006, 66176, 82720, 83072, 88736, 103840, 110920, 122012, 152515, 165440, 177472, 207680, 221840, 244024, 305030, 330880, 354944, 415360, 443680, 488048, 610060, 887360, 976096, 1220120, 1774720, 1952192, 2440240, 3904384, 4880480, 9760960, 19521920]

約数ペア:

[(1, 19521920), (2, 9760960), (4, 4880480), (5, 3904384), (8, 2440240), (10, 1952192), (11, 1774720), (16, 1220120), (20, 976096), (22, 887360), (32, 610060), (40, 488048), (44, 443680), (47, 415360), (55, 354944), (59, 330880), (64, 305030), (80, 244024), (88, 221840), (94, 207680), (110, 177472), (118, 165440), (128, 152515), (160, 122012), (176, 110920), (188, 103840), (220, 88736), (235, 83072), (236, 82720), (295, 66176), (320, 61006), (352, 55460), (376, 51920), (440, 44368), (470, 41536), (472, 41360), (517, 37760), (590, 33088), (640, 30503), (649, 30080), (704, 27730), (752, 25960), (880, 22184), (940, 20768), (944, 20680), (1034, 18880), (1180, 16544), (1298, 15040), (1408, 13865), (1504, 12980), (1760, 11092), (1880, 10384), (1888, 10340), (2068, 9440), (2360, 8272), (2585, 7552), (2596, 7520), (2773, 7040), (3008, 6490), (3245, 6016), (3520, 5546), (3760, 5192), (3776, 5170), (4136, 4720)]