641216

素因数分解:

$2^6\times {\mathrm{43}}^1\times {\mathrm{233}}^1$

素因数の和:288

約数の個数: 28

約数和(自身を含む): 1307592

約数和(自身を除く): 666376

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 172, 233, 344, 466, 688, 932, 1376, 1864, 2752, 3728, 7456, 10019, 14912, 20038, 40076, 80152, 160304, 320608, 641216]

約数ペア:

[(1, 641216), (2, 320608), (4, 160304), (8, 80152), (16, 40076), (32, 20038), (43, 14912), (64, 10019), (86, 7456), (172, 3728), (233, 2752), (344, 1864), (466, 1376), (688, 932)]