21757136

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{25657}}^1$

素因数の和:25718

約数の個数: 20

約数和(自身を含む): 42951492

約数和(自身を除く): 21194356

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 25657, 51314, 102628, 205256, 410512, 1359821, 2719642, 5439284, 10878568, 21757136]

約数ペア:

[(1, 21757136), (2, 10878568), (4, 5439284), (8, 2719642), (16, 1359821), (53, 410512), (106, 205256), (212, 102628), (424, 51314), (848, 25657)]