21270004

素因数分解:

$2^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{4391}}^1$

素因数の和:4575

約数の個数: 24

約数和(自身を含む): 42795648

約数和(自身を除く): 21525644

約数列:

[1, 2, 4, 7, 14, 28, 173, 346, 692, 1211, 2422, 4391, 4844, 8782, 17564, 30737, 61474, 122948, 759643, 1519286, 3038572, 5317501, 10635002, 21270004]

約数ペア:

[(1, 21270004), (2, 10635002), (4, 5317501), (7, 3038572), (14, 1519286), (28, 759643), (173, 122948), (346, 61474), (692, 30737), (1211, 17564), (2422, 8782), (4391, 4844)]