257691824

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{1238903}}^1$

素因数の和:1238924

約数の個数: 20

約数和(自身を含む): 537684336

約数和(自身を除く): 279992512

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 1238903, 2477806, 4955612, 9911224, 16105739, 19822448, 32211478, 64422956, 128845912, 257691824]

約数ペア:

[(1, 257691824), (2, 128845912), (4, 64422956), (8, 32211478), (13, 19822448), (16, 16105739), (26, 9911224), (52, 4955612), (104, 2477806), (208, 1238903)]