20971100

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{4877}}^1$

素因数の和:4934

約数の個数: 36

約数和(自身を含む): 46575144

約数和(自身を除く): 25604044

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 4877, 9754, 19508, 24385, 48770, 97540, 121925, 209711, 243850, 419422, 487700, 838844, 1048555, 2097110, 4194220, 5242775, 10485550, 20971100]

約数ペア:

[(1, 20971100), (2, 10485550), (4, 5242775), (5, 4194220), (10, 2097110), (20, 1048555), (25, 838844), (43, 487700), (50, 419422), (86, 243850), (100, 209711), (172, 121925), (215, 97540), (430, 48770), (860, 24385), (1075, 19508), (2150, 9754), (4300, 4877)]