278775891

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{145423}}^1$

素因数の和:145503

約数の個数: 16

約数和(自身を含む): 418821120

約数和(自身を除く): 140045229

約数列:

[1, 3, 9, 27, 71, 213, 639, 1917, 145423, 436269, 1308807, 3926421, 10325033, 30975099, 92925297, 278775891]

約数ペア:

[(1, 278775891), (3, 92925297), (9, 30975099), (27, 10325033), (71, 3926421), (213, 1308807), (639, 436269), (1917, 145423)]