211689989

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{647}}^1\times {\mathrm{1087}}^1$

素因数の和:1784

約数の個数: 16

約数和(自身を含む): 248168448

約数和(自身を除く): 36478459

約数列:

[1, 7, 43, 301, 647, 1087, 4529, 7609, 27821, 46741, 194747, 327187, 703289, 4923023, 30241427, 211689989]

約数ペア:

[(1, 211689989), (7, 30241427), (43, 4923023), (301, 703289), (647, 327187), (1087, 194747), (4529, 46741), (7609, 27821)]