20490016

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{14891}}^1$

素因数の和:14944

約数の個数: 24

約数和(自身を含む): 41280624

約数和(自身を除く): 20790608

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 172, 344, 688, 1376, 14891, 29782, 59564, 119128, 238256, 476512, 640313, 1280626, 2561252, 5122504, 10245008, 20490016]

約数ペア:

[(1, 20490016), (2, 10245008), (4, 5122504), (8, 2561252), (16, 1280626), (32, 640313), (43, 476512), (86, 238256), (172, 119128), (344, 59564), (688, 29782), (1376, 14891)]