18911013

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{13327}}^1$

素因数の和:13384

約数の個数: 16

約数和(自身を含む): 28148736

約数和(自身を除く): 9237723

約数列:

[1, 3, 11, 33, 43, 129, 473, 1419, 13327, 39981, 146597, 439791, 573061, 1719183, 6303671, 18911013]

約数ペア:

[(1, 18911013), (3, 6303671), (11, 1719183), (33, 573061), (43, 439791), (129, 146597), (473, 39981), (1419, 13327)]