19490290

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{17881}}^1$

素因数の和:17997

約数の個数: 16

約数和(自身を含む): 35406360

約数和(自身を除く): 15916070

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 17881, 35762, 89405, 178810, 1949029, 3898058, 9745145, 19490290]

約数ペア:

[(1, 19490290), (2, 9745145), (5, 3898058), (10, 1949029), (109, 178810), (218, 89405), (545, 35762), (1090, 17881)]