28507780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{203627}}^1$

素因数の和:203643

約数の個数: 24

約数和(自身を含む): 68419008

約数和(自身を除く): 39911228

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 203627, 407254, 814508, 1018135, 1425389, 2036270, 2850778, 4072540, 5701556, 7126945, 14253890, 28507780]

約数ペア:

[(1, 28507780), (2, 14253890), (4, 7126945), (5, 5701556), (7, 4072540), (10, 2850778), (14, 2036270), (20, 1425389), (28, 1018135), (35, 814508), (70, 407254), (140, 203627)]