1278129008

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{198221}}^1$

素因数の和:198273

約数の個数: 40

約数和(自身を含む): 2752907136

約数和(自身を除く): 1474778128

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 3224, 6448, 198221, 396442, 792884, 1585768, 2576873, 3171536, 5153746, 6144851, 10307492, 12289702, 20614984, 24579404, 41229968, 49158808, 79883063, 98317616, 159766126, 319532252, 639064504, 1278129008]

約数ペア:

[(1, 1278129008), (2, 639064504), (4, 319532252), (8, 159766126), (13, 98317616), (16, 79883063), (26, 49158808), (31, 41229968), (52, 24579404), (62, 20614984), (104, 12289702), (124, 10307492), (208, 6144851), (248, 5153746), (403, 3171536), (496, 2576873), (806, 1585768), (1612, 792884), (3224, 396442), (6448, 198221)]