21672513280

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^3\times {\mathrm{12721}}^1$

素因数の和:12775

約数の個数: 144

約数和(自身を含む): 57104274528

約数和(自身を除く): 35431761248

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 121, 128, 160, 176, 220, 242, 256, 320, 352, 440, 484, 605, 640, 704, 880, 968, 1210, 1280, 1331, 1408, 1760, 1936, 2420, 2662, 2816, 3520, 3872, 4840, 5324, 6655, 7040, 7744, 9680, 10648, 12721, 13310, 14080, 15488, 19360, 21296, 25442, 26620, 30976, 38720, 42592, 50884, 53240, 63605, 77440, 85184, 101768, 106480, 127210, 139931, 154880, 170368, 203536, 212960, 254420, 279862, 340736, 407072, 425920, 508840, 559724, 699655, 814144, 851840, 1017680, 1119448, 1399310, 1539241, 1628288, 1703680, 2035360, 2238896, 2798620, 3078482, 3256576, 4070720, 4477792, 5597240, 6156964, 7696205, 8141440, 8955584, 11194480, 12313928, 15392410, 16282880, 16931651, 17911168, 22388960, 24627856, 30784820, 33863302, 35822336, 44777920, 49255712, 61569640, 67726604, 84658255, 89555840, 98511424, 123139280, 135453208, 169316510, 179111680, 197022848, 246278560, 270906416, 338633020, 394045696, 492557120, 541812832, 677266040, 985114240, 1083625664, 1354532080, 1970228480, 2167251328, 2709064160, 4334502656, 5418128320, 10836256640, 21672513280]

約数ペア:

[(1, 21672513280), (2, 10836256640), (4, 5418128320), (5, 4334502656), (8, 2709064160), (10, 2167251328), (11, 1970228480), (16, 1354532080), (20, 1083625664), (22, 985114240), (32, 677266040), (40, 541812832), (44, 492557120), (55, 394045696), (64, 338633020), (80, 270906416), (88, 246278560), (110, 197022848), (121, 179111680), (128, 169316510), (160, 135453208), (176, 123139280), (220, 98511424), (242, 89555840), (256, 84658255), (320, 67726604), (352, 61569640), (440, 49255712), (484, 44777920), (605, 35822336), (640, 33863302), (704, 30784820), (880, 24627856), (968, 22388960), (1210, 17911168), (1280, 16931651), (1331, 16282880), (1408, 15392410), (1760, 12313928), (1936, 11194480), (2420, 8955584), (2662, 8141440), (2816, 7696205), (3520, 6156964), (3872, 5597240), (4840, 4477792), (5324, 4070720), (6655, 3256576), (7040, 3078482), (7744, 2798620), (9680, 2238896), (10648, 2035360), (12721, 1703680), (13310, 1628288), (14080, 1539241), (15488, 1399310), (19360, 1119448), (21296, 1017680), (25442, 851840), (26620, 814144), (30976, 699655), (38720, 559724), (42592, 508840), (50884, 425920), (53240, 407072), (63605, 340736), (77440, 279862), (85184, 254420), (101768, 212960), (106480, 203536), (127210, 170368), (139931, 154880)]