209949905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{200909}}^1$

素因数の和:200944

約数の個数: 16

約数和(自身を含む): 289310400

約数和(自身を除く): 79360495

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 200909, 1004545, 2209999, 3817271, 11049995, 19086355, 41989981, 209949905]

約数ペア:

[(1, 209949905), (5, 41989981), (11, 19086355), (19, 11049995), (55, 3817271), (95, 2209999), (209, 1004545), (1045, 200909)]