278399997

素因数分解:

$3^6\times {\mathrm{521}}^1\times {\mathrm{733}}^1$

素因数の和:1272

約数の個数: 28

約数和(自身を含む): 418780764

約数和(自身を除く): 140380767

約数列:

[1, 3, 9, 27, 81, 243, 521, 729, 733, 1563, 2199, 4689, 6597, 14067, 19791, 42201, 59373, 126603, 178119, 379809, 381893, 534357, 1145679, 3437037, 10311111, 30933333, 92799999, 278399997]

約数ペア:

[(1, 278399997), (3, 92799999), (9, 30933333), (27, 10311111), (81, 3437037), (243, 1145679), (521, 534357), (729, 381893), (733, 379809), (1563, 178119), (2199, 126603), (4689, 59373), (6597, 42201), (14067, 19791)]