21998143

素因数分解:

${\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{709}}^1$

素因数の和:822

約数の個数: 16

約数和(自身を含む): 24537600

約数和(自身を除く): 2539457

約数列:

[1, 19, 23, 71, 437, 709, 1349, 1633, 13471, 16307, 31027, 50339, 309833, 956441, 1157797, 21998143]

約数ペア:

[(1, 21998143), (19, 1157797), (23, 956441), (71, 309833), (437, 50339), (709, 31027), (1349, 16307), (1633, 13471)]