278889136

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{245501}}^1$

素因数の和:245580

約数の個数: 20

約数和(自身を含む): 547960464

約数和(自身を除く): 269071328

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 245501, 491002, 982004, 1964008, 3928016, 17430571, 34861142, 69722284, 139444568, 278889136]

約数ペア:

[(1, 278889136), (2, 139444568), (4, 69722284), (8, 34861142), (16, 17430571), (71, 3928016), (142, 1964008), (284, 982004), (568, 491002), (1136, 245501)]