1291390

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1451}}^1$

素因数の和:1547

約数の個数: 16

約数和(自身を含む): 2352240

約数和(自身を除く): 1060850

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 1451, 2902, 7255, 14510, 129139, 258278, 645695, 1291390]

約数ペア:

[(1, 1291390), (2, 645695), (5, 258278), (10, 129139), (89, 14510), (178, 7255), (445, 2902), (890, 1451)]