20505408

素因数分解:

$2^6\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1$

素因数の和:125

約数の個数: 224

約数和(自身を含む): 72176640

約数和(自身を除く): 51671232

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 16, 19, 21, 22, 24, 28, 32, 33, 38, 42, 44, 48, 56, 57, 64, 66, 73, 76, 77, 84, 88, 96, 112, 114, 132, 133, 146, 152, 154, 168, 176, 192, 209, 219, 224, 228, 231, 264, 266, 292, 304, 308, 336, 352, 399, 418, 438, 448, 456, 462, 511, 528, 532, 584, 608, 616, 627, 672, 704, 798, 803, 836, 876, 912, 924, 1022, 1056, 1064, 1168, 1216, 1232, 1254, 1344, 1387, 1463, 1533, 1596, 1606, 1672, 1752, 1824, 1848, 2044, 2112, 2128, 2336, 2409, 2464, 2508, 2774, 2926, 3066, 3192, 3212, 3344, 3504, 3648, 3696, 4088, 4161, 4256, 4389, 4672, 4818, 4928, 5016, 5548, 5621, 5852, 6132, 6384, 6424, 6688, 7008, 7392, 8176, 8322, 8512, 8778, 9636, 9709, 10032, 11096, 11242, 11704, 12264, 12768, 12848, 13376, 14016, 14784, 15257, 16352, 16644, 16863, 17556, 19272, 19418, 20064, 22192, 22484, 23408, 24528, 25536, 25696, 29127, 30514, 32704, 33288, 33726, 35112, 38544, 38836, 40128, 44384, 44968, 45771, 46816, 49056, 51392, 58254, 61028, 66576, 67452, 70224, 77088, 77672, 88768, 89936, 91542, 93632, 98112, 106799, 116508, 122056, 133152, 134904, 140448, 154176, 155344, 179872, 183084, 213598, 233016, 244112, 266304, 269808, 280896, 310688, 320397, 359744, 366168, 427196, 466032, 488224, 539616, 621376, 640794, 732336, 854392, 932064, 976448, 1079232, 1281588, 1464672, 1708784, 1864128, 2563176, 2929344, 3417568, 5126352, 6835136, 10252704, 20505408]

約数ペア:

[(1, 20505408), (2, 10252704), (3, 6835136), (4, 5126352), (6, 3417568), (7, 2929344), (8, 2563176), (11, 1864128), (12, 1708784), (14, 1464672), (16, 1281588), (19, 1079232), (21, 976448), (22, 932064), (24, 854392), (28, 732336), (32, 640794), (33, 621376), (38, 539616), (42, 488224), (44, 466032), (48, 427196), (56, 366168), (57, 359744), (64, 320397), (66, 310688), (73, 280896), (76, 269808), (77, 266304), (84, 244112), (88, 233016), (96, 213598), (112, 183084), (114, 179872), (132, 155344), (133, 154176), (146, 140448), (152, 134904), (154, 133152), (168, 122056), (176, 116508), (192, 106799), (209, 98112), (219, 93632), (224, 91542), (228, 89936), (231, 88768), (264, 77672), (266, 77088), (292, 70224), (304, 67452), (308, 66576), (336, 61028), (352, 58254), (399, 51392), (418, 49056), (438, 46816), (448, 45771), (456, 44968), (462, 44384), (511, 40128), (528, 38836), (532, 38544), (584, 35112), (608, 33726), (616, 33288), (627, 32704), (672, 30514), (704, 29127), (798, 25696), (803, 25536), (836, 24528), (876, 23408), (912, 22484), (924, 22192), (1022, 20064), (1056, 19418), (1064, 19272), (1168, 17556), (1216, 16863), (1232, 16644), (1254, 16352), (1344, 15257), (1387, 14784), (1463, 14016), (1533, 13376), (1596, 12848), (1606, 12768), (1672, 12264), (1752, 11704), (1824, 11242), (1848, 11096), (2044, 10032), (2112, 9709), (2128, 9636), (2336, 8778), (2409, 8512), (2464, 8322), (2508, 8176), (2774, 7392), (2926, 7008), (3066, 6688), (3192, 6424), (3212, 6384), (3344, 6132), (3504, 5852), (3648, 5621), (3696, 5548), (4088, 5016), (4161, 4928), (4256, 4818), (4389, 4672)]