19745290

素因数分解:

$2^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{10909}}^1$

素因数の和:11097

約数の個数: 16

約数和(自身を含む): 35741160

約数和(自身を除く): 15995870

約数列:

[1, 2, 5, 10, 181, 362, 905, 1810, 10909, 21818, 54545, 109090, 1974529, 3949058, 9872645, 19745290]

約数ペア:

[(1, 19745290), (2, 9872645), (5, 3949058), (10, 1974529), (181, 109090), (362, 54545), (905, 21818), (1810, 10909)]