13237775

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^2$

素因数の和:120

約数の個数: 36

約数和(自身を含む): 18469800

約数和(自身を除く): 5232025

約数列:

[1, 5, 19, 25, 29, 31, 95, 145, 155, 475, 551, 589, 725, 775, 899, 961, 2755, 2945, 4495, 4805, 13775, 14725, 17081, 18259, 22475, 24025, 27869, 85405, 91295, 139345, 427025, 456475, 529511, 696725, 2647555, 13237775]

約数ペア:

[(1, 13237775), (5, 2647555), (19, 696725), (25, 529511), (29, 456475), (31, 427025), (95, 139345), (145, 91295), (155, 85405), (475, 27869), (551, 24025), (589, 22475), (725, 18259), (775, 17081), (899, 14725), (961, 13775), (2755, 4805), (2945, 4495)]