25721890

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{28901}}^1$

素因数の和:28997

約数の個数: 16

約数和(自身を含む): 46821240

約数和(自身を除く): 21099350

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 28901, 57802, 144505, 289010, 2572189, 5144378, 12860945, 25721890]

約数ペア:

[(1, 25721890), (2, 12860945), (5, 5144378), (10, 2572189), (89, 289010), (178, 144505), (445, 57802), (890, 28901)]