1278643970

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1800907}}^1$

素因数の和:1800985

約数の個数: 16

約数和(自身を含む): 2333976768

約数和(自身を除く): 1055332798

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 1800907, 3601814, 9004535, 18009070, 127864397, 255728794, 639321985, 1278643970]

約数ペア:

[(1, 1278643970), (2, 639321985), (5, 255728794), (10, 127864397), (71, 18009070), (142, 9004535), (355, 3601814), (710, 1800907)]