19928815

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1$

素因数の和:223

約数の個数: 32

約数和(自身を含む): 26634240

約数和(自身を除く): 6705425

約数列:

[1, 5, 19, 31, 67, 95, 101, 155, 335, 505, 589, 1273, 1919, 2077, 2945, 3131, 6365, 6767, 9595, 10385, 15655, 33835, 39463, 59489, 128573, 197315, 209777, 297445, 642865, 1048885, 3985763, 19928815]

約数ペア:

[(1, 19928815), (5, 3985763), (19, 1048885), (31, 642865), (67, 297445), (95, 209777), (101, 197315), (155, 128573), (335, 59489), (505, 39463), (589, 33835), (1273, 15655), (1919, 10385), (2077, 9595), (2945, 6767), (3131, 6365)]