17728420

素因数分解:

$2^2\times 5^1\times {\mathrm{886421}}^1$

素因数の和:886430

約数の個数: 12

約数和(自身を含む): 37229724

約数和(自身を除く): 19501304

約数列:

[1, 2, 4, 5, 10, 20, 886421, 1772842, 3545684, 4432105, 8864210, 17728420]

約数ペア:

[(1, 17728420), (2, 8864210), (4, 4432105), (5, 3545684), (10, 1772842), (20, 886421)]