198667021

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{213391}}^1$

素因数の和:213424

約数の個数: 12

約数和(自身を含む): 243266880

約数和(自身を除く): 44599859

約数列:

[1, 7, 19, 49, 133, 931, 213391, 1493737, 4054429, 10456159, 28381003, 198667021]

約数ペア:

[(1, 198667021), (7, 28381003), (19, 10456159), (49, 4054429), (133, 1493737), (931, 213391)]