217189

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:120

約数の個数: 16

約数和(自身を含む): 276480

約数和(自身を除く): 59291

約数列:

[1, 7, 19, 23, 71, 133, 161, 437, 497, 1349, 1633, 3059, 9443, 11431, 31027, 217189]

約数ペア:

[(1, 217189), (7, 31027), (19, 11431), (23, 9443), (71, 3059), (133, 1633), (161, 1349), (437, 497)]