18244420

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8369}}^1$

素因数の和:8487

約数の個数: 24

約数和(自身を含む): 38669400

約数和(自身を除く): 20424980

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 8369, 16738, 33476, 41845, 83690, 167380, 912221, 1824442, 3648884, 4561105, 9122210, 18244420]

約数ペア:

[(1, 18244420), (2, 9122210), (4, 4561105), (5, 3648884), (10, 1824442), (20, 912221), (109, 167380), (218, 83690), (436, 41845), (545, 33476), (1090, 16738), (2180, 8369)]