21997863

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{947}}^1$

素因数の和:1071

約数の個数: 24

約数和(自身を含む): 33274800

約数和(自身を除く): 11276937

約数列:

[1, 3, 9, 29, 87, 89, 261, 267, 801, 947, 2581, 2841, 7743, 8523, 23229, 27463, 82389, 84283, 247167, 252849, 758547, 2444207, 7332621, 21997863]

約数ペア:

[(1, 21997863), (3, 7332621), (9, 2444207), (29, 758547), (87, 252849), (89, 247167), (261, 84283), (267, 82389), (801, 27463), (947, 23229), (2581, 8523), (2841, 7743)]