20891456

素因数分解:

$2^6\times {\mathrm{197}}^1\times {\mathrm{1657}}^1$

素因数の和:1866

約数の個数: 28

約数和(自身を含む): 41692068

約数和(自身を除く): 20800612

約数列:

[1, 2, 4, 8, 16, 32, 64, 197, 394, 788, 1576, 1657, 3152, 3314, 6304, 6628, 12608, 13256, 26512, 53024, 106048, 326429, 652858, 1305716, 2611432, 5222864, 10445728, 20891456]

約数ペア:

[(1, 20891456), (2, 10445728), (4, 5222864), (8, 2611432), (16, 1305716), (32, 652858), (64, 326429), (197, 106048), (394, 53024), (788, 26512), (1576, 13256), (1657, 12608), (3152, 6628), (3314, 6304)]