639632

素因数分解:

$2^4\times 7^1\times {\mathrm{5711}}^1$

素因数の和:5726

約数の個数: 20

約数和(自身を含む): 1416576

約数和(自身を除く): 776944

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 5711, 11422, 22844, 39977, 45688, 79954, 91376, 159908, 319816, 639632]

約数ペア:

[(1, 639632), (2, 319816), (4, 159908), (7, 91376), (8, 79954), (14, 45688), (16, 39977), (28, 22844), (56, 11422), (112, 5711)]