21339648

素因数分解:

$2^9\times 3^2\times {\mathrm{11}}^1\times {\mathrm{421}}^1$

素因数の和:456

約数の個数: 120

約数和(自身を含む): 67346136

約数和(自身を除く): 46006488

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 24, 32, 33, 36, 44, 48, 64, 66, 72, 88, 96, 99, 128, 132, 144, 176, 192, 198, 256, 264, 288, 352, 384, 396, 421, 512, 528, 576, 704, 768, 792, 842, 1056, 1152, 1263, 1408, 1536, 1584, 1684, 2112, 2304, 2526, 2816, 3168, 3368, 3789, 4224, 4608, 4631, 5052, 5632, 6336, 6736, 7578, 8448, 9262, 10104, 12672, 13472, 13893, 15156, 16896, 18524, 20208, 25344, 26944, 27786, 30312, 37048, 40416, 41679, 50688, 53888, 55572, 60624, 74096, 80832, 83358, 107776, 111144, 121248, 148192, 161664, 166716, 215552, 222288, 242496, 296384, 323328, 333432, 444576, 484992, 592768, 646656, 666864, 889152, 969984, 1185536, 1333728, 1778304, 1939968, 2371072, 2667456, 3556608, 5334912, 7113216, 10669824, 21339648]

約数ペア:

[(1, 21339648), (2, 10669824), (3, 7113216), (4, 5334912), (6, 3556608), (8, 2667456), (9, 2371072), (11, 1939968), (12, 1778304), (16, 1333728), (18, 1185536), (22, 969984), (24, 889152), (32, 666864), (33, 646656), (36, 592768), (44, 484992), (48, 444576), (64, 333432), (66, 323328), (72, 296384), (88, 242496), (96, 222288), (99, 215552), (128, 166716), (132, 161664), (144, 148192), (176, 121248), (192, 111144), (198, 107776), (256, 83358), (264, 80832), (288, 74096), (352, 60624), (384, 55572), (396, 53888), (421, 50688), (512, 41679), (528, 40416), (576, 37048), (704, 30312), (768, 27786), (792, 26944), (842, 25344), (1056, 20208), (1152, 18524), (1263, 16896), (1408, 15156), (1536, 13893), (1584, 13472), (1684, 12672), (2112, 10104), (2304, 9262), (2526, 8448), (2816, 7578), (3168, 6736), (3368, 6336), (3789, 5632), (4224, 5052), (4608, 4631)]