278527285

素因数分解:

$5^1\times {\mathrm{307}}^1\times {\mathrm{421}}^1\times {\mathrm{431}}^1$

素因数の和:1164

約数の個数: 16

約数和(自身を含む): 336897792

約数和(自身を除く): 58370507

約数列:

[1, 5, 307, 421, 431, 1535, 2105, 2155, 129247, 132317, 181451, 646235, 661585, 907255, 55705457, 278527285]

約数ペア:

[(1, 278527285), (5, 55705457), (307, 907255), (421, 661585), (431, 646235), (1535, 181451), (2105, 132317), (2155, 129247)]