20639810

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{50341}}^1$

素因数の和:50389

約数の個数: 16

約数和(自身を含む): 38058552

約数和(自身を除く): 17418742

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 50341, 100682, 251705, 503410, 2063981, 4127962, 10319905, 20639810]

約数ペア:

[(1, 20639810), (2, 10319905), (5, 4127962), (10, 2063981), (41, 503410), (82, 251705), (205, 100682), (410, 50341)]