278614985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{257}}^1\times {\mathrm{857}}^1$

素因数の和:1153

約数の個数: 32

約数和(自身を含む): 382516992

約数和(自身を除く): 103902007

約数列:

[1, 5, 11, 23, 55, 115, 253, 257, 857, 1265, 1285, 2827, 4285, 5911, 9427, 14135, 19711, 29555, 47135, 65021, 98555, 216821, 220249, 325105, 1084105, 1101245, 2422739, 5065727, 12113695, 25328635, 55722997, 278614985]

約数ペア:

[(1, 278614985), (5, 55722997), (11, 25328635), (23, 12113695), (55, 5065727), (115, 2422739), (253, 1101245), (257, 1084105), (857, 325105), (1265, 220249), (1285, 216821), (2827, 98555), (4285, 65021), (5911, 47135), (9427, 29555), (14135, 19711)]