20638864

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{67891}}^1$

素因数の和:67918

約数の個数: 20

約数和(自身を含む): 42093040

約数和(自身を除く): 21454176

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 67891, 135782, 271564, 543128, 1086256, 1289929, 2579858, 5159716, 10319432, 20638864]

約数ペア:

[(1, 20638864), (2, 10319432), (4, 5159716), (8, 2579858), (16, 1289929), (19, 1086256), (38, 543128), (76, 271564), (152, 135782), (304, 67891)]