64745825

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{4397}}^1$

素因数の和:4457

約数の個数: 24

約数和(自身を含む): 87256320

約数和(自身を除く): 22510495

約数列:

[1, 5, 19, 25, 31, 95, 155, 475, 589, 775, 2945, 4397, 14725, 21985, 83543, 109925, 136307, 417715, 681535, 2088575, 2589833, 3407675, 12949165, 64745825]

約数ペア:

[(1, 64745825), (5, 12949165), (19, 3407675), (25, 2589833), (31, 2088575), (95, 681535), (155, 417715), (475, 136307), (589, 109925), (775, 83543), (2945, 21985), (4397, 14725)]