18758420

素因数分解:

$2^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{2657}}^1$

素因数の和:3019

約数の個数: 24

約数和(自身を含む): 39519144

約数和(自身を除く): 20760724

約数列:

[1, 2, 4, 5, 10, 20, 353, 706, 1412, 1765, 2657, 3530, 5314, 7060, 10628, 13285, 26570, 53140, 937921, 1875842, 3751684, 4689605, 9379210, 18758420]

約数ペア:

[(1, 18758420), (2, 9379210), (4, 4689605), (5, 3751684), (10, 1875842), (20, 937921), (353, 53140), (706, 26570), (1412, 13285), (1765, 10628), (2657, 7060), (3530, 5314)]