257084656

素因数分解:

$2^4\times {\mathrm{821}}^1\times {\mathrm{19571}}^1$

素因数の和:20400

約数の個数: 20

約数和(自身を含む): 498733704

約数和(自身を除く): 241649048

約数列:

[1, 2, 4, 8, 16, 821, 1642, 3284, 6568, 13136, 19571, 39142, 78284, 156568, 313136, 16067791, 32135582, 64271164, 128542328, 257084656]

約数ペア:

[(1, 257084656), (2, 128542328), (4, 64271164), (8, 32135582), (16, 16067791), (821, 313136), (1642, 156568), (3284, 78284), (6568, 39142), (13136, 19571)]