16431280

素因数分解:

$2^4\times 5^1\times {\mathrm{205391}}^1$

素因数の和:205404

約数の個数: 20

約数和(自身を含む): 38202912

約数和(自身を除く): 21771632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 205391, 410782, 821564, 1026955, 1643128, 2053910, 3286256, 4107820, 8215640, 16431280]

約数ペア:

[(1, 16431280), (2, 8215640), (4, 4107820), (5, 3286256), (8, 2053910), (10, 1643128), (16, 1026955), (20, 821564), (40, 410782), (80, 205391)]