1601992025

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{221729}}^1$

素因数の和:221773

約数の個数: 18

約数和(自身を含む): 2110204410

約数和(自身を除く): 508212385

約数列:

[1, 5, 17, 25, 85, 289, 425, 1445, 7225, 221729, 1108645, 3769393, 5543225, 18846965, 64079681, 94234825, 320398405, 1601992025]

約数ペア:

[(1, 1601992025), (5, 320398405), (17, 94234825), (25, 64079681), (85, 18846965), (289, 5543225), (425, 3769393), (1445, 1108645), (7225, 221729)]