1013990405

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{20549}}^1$

素因数の和:20764

約数の個数: 16

約数和(自身を含む): 1242864000

約数和(自身を除く): 228873595

約数列:

[1, 5, 71, 139, 355, 695, 9869, 20549, 49345, 102745, 1458979, 2856311, 7294895, 14281555, 202798081, 1013990405]

約数ペア:

[(1, 1013990405), (5, 202798081), (71, 14281555), (139, 7294895), (355, 2856311), (695, 1458979), (9869, 102745), (20549, 49345)]