21681408

素因数分解:

$2^8\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:172

約数の個数: 144

約数和(自身を含む): 68351360

約数和(自身を除く): 46669952

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 37, 42, 48, 56, 64, 74, 84, 96, 109, 111, 112, 128, 148, 168, 192, 218, 222, 224, 256, 259, 296, 327, 336, 384, 436, 444, 448, 518, 592, 654, 672, 763, 768, 777, 872, 888, 896, 1036, 1184, 1308, 1344, 1526, 1554, 1744, 1776, 1792, 2072, 2289, 2368, 2616, 2688, 3052, 3108, 3488, 3552, 4033, 4144, 4578, 4736, 5232, 5376, 6104, 6216, 6976, 7104, 8066, 8288, 9156, 9472, 10464, 12099, 12208, 12432, 13952, 14208, 16132, 16576, 18312, 20928, 24198, 24416, 24864, 27904, 28231, 28416, 32264, 33152, 36624, 41856, 48396, 48832, 49728, 56462, 64528, 66304, 73248, 83712, 84693, 96792, 97664, 99456, 112924, 129056, 146496, 169386, 193584, 195328, 198912, 225848, 258112, 292992, 338772, 387168, 451696, 516224, 585984, 677544, 774336, 903392, 1032448, 1355088, 1548672, 1806784, 2710176, 3097344, 3613568, 5420352, 7227136, 10840704, 21681408]

約数ペア:

[(1, 21681408), (2, 10840704), (3, 7227136), (4, 5420352), (6, 3613568), (7, 3097344), (8, 2710176), (12, 1806784), (14, 1548672), (16, 1355088), (21, 1032448), (24, 903392), (28, 774336), (32, 677544), (37, 585984), (42, 516224), (48, 451696), (56, 387168), (64, 338772), (74, 292992), (84, 258112), (96, 225848), (109, 198912), (111, 195328), (112, 193584), (128, 169386), (148, 146496), (168, 129056), (192, 112924), (218, 99456), (222, 97664), (224, 96792), (256, 84693), (259, 83712), (296, 73248), (327, 66304), (336, 64528), (384, 56462), (436, 49728), (444, 48832), (448, 48396), (518, 41856), (592, 36624), (654, 33152), (672, 32264), (763, 28416), (768, 28231), (777, 27904), (872, 24864), (888, 24416), (896, 24198), (1036, 20928), (1184, 18312), (1308, 16576), (1344, 16132), (1526, 14208), (1554, 13952), (1744, 12432), (1776, 12208), (1792, 12099), (2072, 10464), (2289, 9472), (2368, 9156), (2616, 8288), (2688, 8066), (3052, 7104), (3108, 6976), (3488, 6216), (3552, 6104), (4033, 5376), (4144, 5232), (4578, 4736)]