21270256

素因数分解:

$2^4\times 7^1\times {\mathrm{189913}}^1$

素因数の和:189928

約数の個数: 20

約数和(自身を含む): 47098672

約数和(自身を除く): 25828416

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 189913, 379826, 759652, 1329391, 1519304, 2658782, 3038608, 5317564, 10635128, 21270256]

約数ペア:

[(1, 21270256), (2, 10635128), (4, 5317564), (7, 3038608), (8, 2658782), (14, 1519304), (16, 1329391), (28, 759652), (56, 379826), (112, 189913)]