51449680

素因数分解:

$2^4\times 5^1\times {\mathrm{643121}}^1$

素因数の和:643134

約数の個数: 20

約数和(自身を含む): 119620692

約数和(自身を除く): 68171012

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 643121, 1286242, 2572484, 3215605, 5144968, 6431210, 10289936, 12862420, 25724840, 51449680]

約数ペア:

[(1, 51449680), (2, 25724840), (4, 12862420), (5, 10289936), (8, 6431210), (10, 5144968), (16, 3215605), (20, 2572484), (40, 1286242), (80, 643121)]