197157020

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{90439}}^1$

素因数の和:90557

約数の個数: 24

約数和(自身を含む): 417832800

約数和(自身を除く): 220675780

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 90439, 180878, 361756, 452195, 904390, 1808780, 9857851, 19715702, 39431404, 49289255, 98578510, 197157020]

約数ペア:

[(1, 197157020), (2, 98578510), (4, 49289255), (5, 39431404), (10, 19715702), (20, 9857851), (109, 1808780), (218, 904390), (436, 452195), (545, 361756), (1090, 180878), (2180, 90439)]