19966256

素因数分解:

$2^4\times {\mathrm{269}}^1\times {\mathrm{4639}}^1$

素因数の和:4916

約数の個数: 20

約数和(自身を含む): 38836800

約数和(自身を除く): 18870544

約数列:

[1, 2, 4, 8, 16, 269, 538, 1076, 2152, 4304, 4639, 9278, 18556, 37112, 74224, 1247891, 2495782, 4991564, 9983128, 19966256]

約数ペア:

[(1, 19966256), (2, 9983128), (4, 4991564), (8, 2495782), (16, 1247891), (269, 74224), (538, 37112), (1076, 18556), (2152, 9278), (4304, 4639)]