639755391

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{71537}}^1$

素因数の和:71822

約数の個数: 16

約数和(自身を含む): 934000128

約数和(自身を除く): 294244737

約数列:

[1, 3, 11, 33, 271, 813, 2981, 8943, 71537, 214611, 786907, 2360721, 19386527, 58159581, 213251797, 639755391]

約数ペア:

[(1, 639755391), (3, 213251797), (11, 58159581), (33, 19386527), (271, 2360721), (813, 786907), (2981, 214611), (8943, 71537)]