18890416

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{27457}}^1$

素因数の和:27508

約数の個数: 20

約数和(自身を含む): 37452712

約数和(自身を除く): 18562296

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 27457, 54914, 109828, 219656, 439312, 1180651, 2361302, 4722604, 9445208, 18890416]

約数ペア:

[(1, 18890416), (2, 9445208), (4, 4722604), (8, 2361302), (16, 1180651), (43, 439312), (86, 219656), (172, 109828), (344, 54914), (688, 27457)]