20666875

素因数分解:

$5^4\times {\mathrm{43}}^1\times {\mathrm{769}}^1$

素因数の和:832

約数の個数: 20

約数和(自身を含む): 26460280

約数和(自身を除く): 5793405

約数列:

[1, 5, 25, 43, 125, 215, 625, 769, 1075, 3845, 5375, 19225, 26875, 33067, 96125, 165335, 480625, 826675, 4133375, 20666875]

約数ペア:

[(1, 20666875), (5, 4133375), (25, 826675), (43, 480625), (125, 165335), (215, 96125), (625, 33067), (769, 26875), (1075, 19225), (3845, 5375)]