18980525

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1289}}^1$

素因数の和:1349

約数の個数: 24

約数和(自身を含む): 25593600

約数和(自身を除く): 6613075

約数列:

[1, 5, 19, 25, 31, 95, 155, 475, 589, 775, 1289, 2945, 6445, 14725, 24491, 32225, 39959, 122455, 199795, 612275, 759221, 998975, 3796105, 18980525]

約数ペア:

[(1, 18980525), (5, 3796105), (19, 998975), (25, 759221), (31, 612275), (95, 199795), (155, 122455), (475, 39959), (589, 32225), (775, 24491), (1289, 14725), (2945, 6445)]