20189841

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{15761}}^1$

素因数の和:15832

約数の個数: 16

約数和(自身を含む): 31271808

約数和(自身を除く): 11081967

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 15761, 47283, 110327, 330981, 961421, 2884263, 6729947, 20189841]

約数ペア:

[(1, 20189841), (3, 6729947), (7, 2884263), (21, 961421), (61, 330981), (183, 110327), (427, 47283), (1281, 15761)]