81379945

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{271}}^1$

素因数の和:433

約数の個数: 32

約数和(自身を含む): 107712000

約数和(自身を除く): 26332055

約数列:

[1, 5, 19, 29, 95, 109, 145, 271, 545, 551, 1355, 2071, 2755, 3161, 5149, 7859, 10355, 15805, 25745, 29539, 39295, 60059, 147695, 149321, 300295, 561241, 746605, 856631, 2806205, 4283155, 16275989, 81379945]

約数ペア:

[(1, 81379945), (5, 16275989), (19, 4283155), (29, 2806205), (95, 856631), (109, 746605), (145, 561241), (271, 300295), (545, 149321), (551, 147695), (1355, 60059), (2071, 39295), (2755, 29539), (3161, 25745), (5149, 15805), (7859, 10355)]