90987280

素因数分解:

$2^4\times 5^1\times {\mathrm{1137341}}^1$

素因数の和:1137354

約数の個数: 20

約数和(自身を含む): 211545612

約数和(自身を除く): 120558332

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1137341, 2274682, 4549364, 5686705, 9098728, 11373410, 18197456, 22746820, 45493640, 90987280]

約数ペア:

[(1, 90987280), (2, 45493640), (4, 22746820), (5, 18197456), (8, 11373410), (10, 9098728), (16, 5686705), (20, 4549364), (40, 2274682), (80, 1137341)]