16718420

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{7669}}^1$

素因数の和:7787

約数の個数: 24

約数和(自身を含む): 35435400

約数和(自身を除く): 18716980

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 7669, 15338, 30676, 38345, 76690, 153380, 835921, 1671842, 3343684, 4179605, 8359210, 16718420]

約数ペア:

[(1, 16718420), (2, 8359210), (4, 4179605), (5, 3343684), (10, 1671842), (20, 835921), (109, 153380), (218, 76690), (436, 38345), (545, 30676), (1090, 15338), (2180, 7669)]