51707420

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{23719}}^1$

素因数の和:23837

約数の個数: 24

約数和(自身を含む): 109586400

約数和(自身を除く): 57878980

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 23719, 47438, 94876, 118595, 237190, 474380, 2585371, 5170742, 10341484, 12926855, 25853710, 51707420]

約数ペア:

[(1, 51707420), (2, 25853710), (4, 12926855), (5, 10341484), (10, 5170742), (20, 2585371), (109, 474380), (218, 237190), (436, 118595), (545, 94876), (1090, 47438), (2180, 23719)]