257901712

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{115963}}^1$

素因数の和:116110

約数の個数: 20

約数和(自身を含む): 503283760

約数和(自身を除く): 245382048

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 115963, 231926, 463852, 927704, 1855408, 16118857, 32237714, 64475428, 128950856, 257901712]

約数ペア:

[(1, 257901712), (2, 128950856), (4, 64475428), (8, 32237714), (16, 16118857), (139, 1855408), (278, 927704), (556, 463852), (1112, 231926), (2224, 115963)]