8420420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{22159}}^1$

素因数の和:22187

約数の個数: 24

約数和(自身を含む): 18614400

約数和(自身を除く): 10193980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 22159, 44318, 88636, 110795, 221590, 421021, 443180, 842042, 1684084, 2105105, 4210210, 8420420]

約数ペア:

[(1, 8420420), (2, 4210210), (4, 2105105), (5, 1684084), (10, 842042), (19, 443180), (20, 421021), (38, 221590), (76, 110795), (95, 88636), (190, 44318), (380, 22159)]