21680736

素因数分解:

$2^5\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{419}}^1$

素因数の和:457

約数の個数: 144

約数和(自身を含む): 72394560

約数和(自身を除く): 50713824

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 16, 21, 22, 24, 28, 32, 33, 42, 44, 48, 49, 56, 66, 77, 84, 88, 96, 98, 112, 132, 147, 154, 168, 176, 196, 224, 231, 264, 294, 308, 336, 352, 392, 419, 462, 528, 539, 588, 616, 672, 784, 838, 924, 1056, 1078, 1176, 1232, 1257, 1568, 1617, 1676, 1848, 2156, 2352, 2464, 2514, 2933, 3234, 3352, 3696, 4312, 4609, 4704, 5028, 5866, 6468, 6704, 7392, 8624, 8799, 9218, 10056, 11732, 12936, 13408, 13827, 17248, 17598, 18436, 20112, 20531, 23464, 25872, 27654, 32263, 35196, 36872, 40224, 41062, 46928, 51744, 55308, 61593, 64526, 70392, 73744, 82124, 93856, 96789, 110616, 123186, 129052, 140784, 147488, 164248, 193578, 221232, 225841, 246372, 258104, 281568, 328496, 387156, 442464, 451682, 492744, 516208, 656992, 677523, 774312, 903364, 985488, 1032416, 1355046, 1548624, 1806728, 1970976, 2710092, 3097248, 3613456, 5420184, 7226912, 10840368, 21680736]

約数ペア:

[(1, 21680736), (2, 10840368), (3, 7226912), (4, 5420184), (6, 3613456), (7, 3097248), (8, 2710092), (11, 1970976), (12, 1806728), (14, 1548624), (16, 1355046), (21, 1032416), (22, 985488), (24, 903364), (28, 774312), (32, 677523), (33, 656992), (42, 516208), (44, 492744), (48, 451682), (49, 442464), (56, 387156), (66, 328496), (77, 281568), (84, 258104), (88, 246372), (96, 225841), (98, 221232), (112, 193578), (132, 164248), (147, 147488), (154, 140784), (168, 129052), (176, 123186), (196, 110616), (224, 96789), (231, 93856), (264, 82124), (294, 73744), (308, 70392), (336, 64526), (352, 61593), (392, 55308), (419, 51744), (462, 46928), (528, 41062), (539, 40224), (588, 36872), (616, 35196), (672, 32263), (784, 27654), (838, 25872), (924, 23464), (1056, 20531), (1078, 20112), (1176, 18436), (1232, 17598), (1257, 17248), (1568, 13827), (1617, 13408), (1676, 12936), (1848, 11732), (2156, 10056), (2352, 9218), (2464, 8799), (2514, 8624), (2933, 7392), (3234, 6704), (3352, 6468), (3696, 5866), (4312, 5028), (4609, 4704)]