18939910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{172181}}^1$

素因数の和:172199

約数の個数: 16

約数和(自身を含む): 37191312

約数和(自身を除く): 18251402

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 172181, 344362, 860905, 1721810, 1893991, 3787982, 9469955, 18939910]

約数ペア:

[(1, 18939910), (2, 9469955), (5, 3787982), (10, 1893991), (11, 1721810), (22, 860905), (55, 344362), (110, 172181)]