18908390

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{43973}}^1$

素因数の和:44023

約数の個数: 16

約数和(自身を含む): 34827408

約数和(自身を除く): 15919018

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 43973, 87946, 219865, 439730, 1890839, 3781678, 9454195, 18908390]

約数ペア:

[(1, 18908390), (2, 9454195), (5, 3781678), (10, 1890839), (43, 439730), (86, 219865), (215, 87946), (430, 43973)]