638379212

素因数分解:

$2^2\times {\mathrm{4007}}^1\times {\mathrm{39829}}^1$

素因数の和:43840

約数の個数: 12

約数和(自身を含む): 1117470480

約数和(自身を除く): 479091268

約数列:

[1, 2, 4, 4007, 8014, 16028, 39829, 79658, 159316, 159594803, 319189606, 638379212]

約数ペア:

[(1, 638379212), (2, 319189606), (4, 159594803), (4007, 159316), (8014, 79658), (16028, 39829)]