20542090

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{23081}}^1$

素因数の和:23177

約数の個数: 16

約数和(自身を含む): 37392840

約数和(自身を除く): 16850750

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 23081, 46162, 115405, 230810, 2054209, 4108418, 10271045, 20542090]

約数ペア:

[(1, 20542090), (2, 10271045), (5, 4108418), (10, 2054209), (89, 230810), (178, 115405), (445, 46162), (890, 23081)]