21255128

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1627}}^1$

素因数の和:1727

約数の個数: 32

約数和(自身を含む): 42197760

約数和(自身を除く): 20942632

約数列:

[1, 2, 4, 8, 23, 46, 71, 92, 142, 184, 284, 568, 1627, 1633, 3254, 3266, 6508, 6532, 13016, 13064, 37421, 74842, 115517, 149684, 231034, 299368, 462068, 924136, 2656891, 5313782, 10627564, 21255128]

約数ペア:

[(1, 21255128), (2, 10627564), (4, 5313782), (8, 2656891), (23, 924136), (46, 462068), (71, 299368), (92, 231034), (142, 149684), (184, 115517), (284, 74842), (568, 37421), (1627, 13064), (1633, 13016), (3254, 6532), (3266, 6508)]