639968165048

素因数分解:

$2^3\times {\mathrm{79996020631}}^1$

素因数の和:79996020637

約数の個数: 8

約数和(自身を含む): 1199940309480

約数和(自身を除く): 559972144432

約数列:

[1, 2, 4, 8, 79996020631, 159992041262, 319984082524, 639968165048]

約数ペア:

[(1, 639968165048), (2, 319984082524), (4, 159992041262), (8, 79996020631)]