21005544

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1289}}^1$

素因数の和:1402

約数の個数: 64

約数和(自身を含む): 60681600

約数和(自身を除く): 39676056

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 97, 168, 194, 291, 388, 582, 679, 776, 1164, 1289, 1358, 2037, 2328, 2578, 2716, 3867, 4074, 5156, 5432, 7734, 8148, 9023, 10312, 15468, 16296, 18046, 27069, 30936, 36092, 54138, 72184, 108276, 125033, 216552, 250066, 375099, 500132, 750198, 875231, 1000264, 1500396, 1750462, 2625693, 3000792, 3500924, 5251386, 7001848, 10502772, 21005544]

約数ペア:

[(1, 21005544), (2, 10502772), (3, 7001848), (4, 5251386), (6, 3500924), (7, 3000792), (8, 2625693), (12, 1750462), (14, 1500396), (21, 1000264), (24, 875231), (28, 750198), (42, 500132), (56, 375099), (84, 250066), (97, 216552), (168, 125033), (194, 108276), (291, 72184), (388, 54138), (582, 36092), (679, 30936), (776, 27069), (1164, 18046), (1289, 16296), (1358, 15468), (2037, 10312), (2328, 9023), (2578, 8148), (2716, 7734), (3867, 5432), (4074, 5156)]