19390864

素因数分解:

$2^4\times {\mathrm{509}}^1\times {\mathrm{2381}}^1$

素因数の和:2898

約数の個数: 20

約数和(自身を含む): 37659420

約数和(自身を除く): 18268556

約数列:

[1, 2, 4, 8, 16, 509, 1018, 2036, 2381, 4072, 4762, 8144, 9524, 19048, 38096, 1211929, 2423858, 4847716, 9695432, 19390864]

約数ペア:

[(1, 19390864), (2, 9695432), (4, 4847716), (8, 2423858), (16, 1211929), (509, 38096), (1018, 19048), (2036, 9524), (2381, 8144), (4072, 4762)]