16563519

素因数分解:

$3^2\times 7^2\times {\mathrm{23}}^2\times {\mathrm{71}}^1$

素因数の和:137

約数の個数: 54

約数和(自身を含む): 29503656

約数和(自身を除く): 12940137

約数列:

[1, 3, 7, 9, 21, 23, 49, 63, 69, 71, 147, 161, 207, 213, 441, 483, 497, 529, 639, 1127, 1449, 1491, 1587, 1633, 3381, 3479, 3703, 4473, 4761, 4899, 10143, 10437, 11109, 11431, 14697, 25921, 31311, 33327, 34293, 37559, 77763, 80017, 102879, 112677, 233289, 240051, 262913, 338031, 720153, 788739, 1840391, 2366217, 5521173, 16563519]

約数ペア:

[(1, 16563519), (3, 5521173), (7, 2366217), (9, 1840391), (21, 788739), (23, 720153), (49, 338031), (63, 262913), (69, 240051), (71, 233289), (147, 112677), (161, 102879), (207, 80017), (213, 77763), (441, 37559), (483, 34293), (497, 33327), (529, 31311), (639, 25921), (1127, 14697), (1449, 11431), (1491, 11109), (1587, 10437), (1633, 10143), (3381, 4899), (3479, 4761), (3703, 4473)]