20158525

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^2$

素因数の和:134

約数の個数: 36

約数和(自身を含む): 27914880

約数和(自身を除く): 7756355

約数列:

[1, 5, 19, 25, 31, 37, 95, 155, 185, 475, 589, 703, 775, 925, 1147, 1369, 2945, 3515, 5735, 6845, 14725, 17575, 21793, 26011, 28675, 34225, 42439, 108965, 130055, 212195, 544825, 650275, 806341, 1060975, 4031705, 20158525]

約数ペア:

[(1, 20158525), (5, 4031705), (19, 1060975), (25, 806341), (31, 650275), (37, 544825), (95, 212195), (155, 130055), (185, 108965), (475, 42439), (589, 34225), (703, 28675), (775, 26011), (925, 21793), (1147, 17575), (1369, 14725), (2945, 6845), (3515, 5735)]