278399989

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{1423}}^1\times {\mathrm{1471}}^1$

素因数の和:2920

約数の個数: 16

約数和(自身を含む): 335380480

約数和(自身を除く): 56980491

約数列:

[1, 7, 19, 133, 1423, 1471, 9961, 10297, 27037, 27949, 189259, 195643, 2093233, 14652631, 39771427, 278399989]

約数ペア:

[(1, 278399989), (7, 39771427), (19, 14652631), (133, 2093233), (1423, 195643), (1471, 189259), (9961, 27949), (10297, 27037)]