19989448

素因数分解:

$2^3\times {\mathrm{509}}^1\times {\mathrm{4909}}^1$

素因数の和:5424

約数の個数: 16

約数和(自身を含む): 37561500

約数和(自身を除く): 17572052

約数列:

[1, 2, 4, 8, 509, 1018, 2036, 4072, 4909, 9818, 19636, 39272, 2498681, 4997362, 9994724, 19989448]

約数ペア:

[(1, 19989448), (2, 9994724), (4, 4997362), (8, 2498681), (509, 39272), (1018, 19636), (2036, 9818), (4072, 4909)]