28109480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{100391}}^1$

素因数の和:100409

約数の個数: 32

約数和(自身を含む): 72282240

約数和(自身を除く): 44172760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 100391, 200782, 401564, 501955, 702737, 803128, 1003910, 1405474, 2007820, 2810948, 3513685, 4015640, 5621896, 7027370, 14054740, 28109480]

約数ペア:

[(1, 28109480), (2, 14054740), (4, 7027370), (5, 5621896), (7, 4015640), (8, 3513685), (10, 2810948), (14, 2007820), (20, 1405474), (28, 1003910), (35, 803128), (40, 702737), (56, 501955), (70, 401564), (140, 200782), (280, 100391)]