648778864

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{2134141}}^1$

素因数の和:2134168

約数の個数: 20

約数和(自身を含む): 1323168040

約数和(自身を除く): 674389176

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 2134141, 4268282, 8536564, 17073128, 34146256, 40548679, 81097358, 162194716, 324389432, 648778864]

約数ペア:

[(1, 648778864), (2, 324389432), (4, 162194716), (8, 81097358), (16, 40548679), (19, 34146256), (38, 17073128), (76, 8536564), (152, 4268282), (304, 2134141)]