20123286280

素因数分解:

$2^3\times 5^1\times {\mathrm{2017}}^1\times {\mathrm{249421}}^1$

素因数の和:251449

約数の個数: 32

約数和(自身を含む): 45300023640

約数和(自身を除く): 25176737360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2017, 4034, 8068, 10085, 16136, 20170, 40340, 80680, 249421, 498842, 997684, 1247105, 1995368, 2494210, 4988420, 9976840, 503082157, 1006164314, 2012328628, 2515410785, 4024657256, 5030821570, 10061643140, 20123286280]

約数ペア:

[(1, 20123286280), (2, 10061643140), (4, 5030821570), (5, 4024657256), (8, 2515410785), (10, 2012328628), (20, 1006164314), (40, 503082157), (2017, 9976840), (4034, 4988420), (8068, 2494210), (10085, 1995368), (16136, 1247105), (20170, 997684), (40340, 498842), (80680, 249421)]