20161686951

素因数分解:

$3^2\times 7^2\times {\mathrm{45718111}}^1$

素因数の和:45718131

約数の個数: 18

約数和(自身を含む): 33877120992

約数和(自身を除く): 13715434041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 45718111, 137154333, 320026777, 411462999, 960080331, 2240187439, 2880240993, 6720562317, 20161686951]

約数ペア:

[(1, 20161686951), (3, 6720562317), (7, 2880240993), (9, 2240187439), (21, 960080331), (49, 411462999), (63, 320026777), (147, 137154333), (441, 45718111)]