19889303

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{397}}^1\times {\mathrm{421}}^1$

素因数の和:842

約数の個数: 16

約数和(自身を含む): 24185664

約数和(自身を除く): 4296361

約数列:

[1, 7, 17, 119, 397, 421, 2779, 2947, 6749, 7157, 47243, 50099, 167137, 1169959, 2841329, 19889303]

約数ペア:

[(1, 19889303), (7, 2841329), (17, 1169959), (119, 167137), (397, 50099), (421, 47243), (2779, 7157), (2947, 6749)]