51280420

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{6269}}^1$

素因数の和:6687

約数の個数: 24

約数和(自身を含む): 107969400

約数和(自身を除く): 56688980

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 4090, 6269, 8180, 12538, 25076, 31345, 62690, 125380, 2564021, 5128042, 10256084, 12820105, 25640210, 51280420]

約数ペア:

[(1, 51280420), (2, 25640210), (4, 12820105), (5, 10256084), (10, 5128042), (20, 2564021), (409, 125380), (818, 62690), (1636, 31345), (2045, 25076), (4090, 12538), (6269, 8180)]