19954990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181409}}^1$

素因数の和:181427

約数の個数: 16

約数和(自身を含む): 39184560

約数和(自身を除く): 19229570

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 181409, 362818, 907045, 1814090, 1995499, 3990998, 9977495, 19954990]

約数ペア:

[(1, 19954990), (2, 9977495), (5, 3990998), (10, 1995499), (11, 1814090), (22, 907045), (55, 362818), (110, 181409)]