18911056

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{27487}}^1$

素因数の和:27538

約数の個数: 20

約数和(自身を含む): 37493632

約数和(自身を除く): 18582576

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 27487, 54974, 109948, 219896, 439792, 1181941, 2363882, 4727764, 9455528, 18911056]

約数ペア:

[(1, 18911056), (2, 9455528), (4, 4727764), (8, 2363882), (16, 1181941), (43, 439792), (86, 219896), (172, 109948), (344, 54974), (688, 27487)]