254879989

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{383}}^1$

素因数の和:577

約数の個数: 32

約数和(自身を含む): 322043904

約数和(自身を除く): 67163915

約数列:

[1, 7, 13, 71, 91, 103, 383, 497, 721, 923, 1339, 2681, 4979, 6461, 7313, 9373, 27193, 34853, 39449, 51191, 95069, 190351, 276143, 353509, 512837, 665483, 2474563, 2800879, 3589859, 19606153, 36411427, 254879989]

約数ペア:

[(1, 254879989), (7, 36411427), (13, 19606153), (71, 3589859), (91, 2800879), (103, 2474563), (383, 665483), (497, 512837), (721, 353509), (923, 276143), (1339, 190351), (2681, 95069), (4979, 51191), (6461, 39449), (7313, 34853), (9373, 27193)]