256765761

素因数分解:

$3^3\times 7^1\times {\mathrm{53}}^1\times {\mathrm{25633}}^1$

素因数の和:25702

約数の個数: 32

約数和(自身を含む): 442955520

約数和(自身を除く): 186189759

約数列:

[1, 3, 7, 9, 21, 27, 53, 63, 159, 189, 371, 477, 1113, 1431, 3339, 10017, 25633, 76899, 179431, 230697, 538293, 692091, 1358549, 1614879, 4075647, 4844637, 9509843, 12226941, 28529529, 36680823, 85588587, 256765761]

約数ペア:

[(1, 256765761), (3, 85588587), (7, 36680823), (9, 28529529), (21, 12226941), (27, 9509843), (53, 4844637), (63, 4075647), (159, 1614879), (189, 1358549), (371, 692091), (477, 538293), (1113, 230697), (1431, 179431), (3339, 76899), (10017, 25633)]