21378129

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{2423}}^1$

素因数の和:2616

約数の個数: 16

約数和(自身を含む): 30367872

約数和(自身を除く): 8989743

約数列:

[1, 3, 17, 51, 173, 519, 2423, 2941, 7269, 8823, 41191, 123573, 419179, 1257537, 7126043, 21378129]

約数ペア:

[(1, 21378129), (3, 7126043), (17, 1257537), (51, 419179), (173, 123573), (519, 41191), (2423, 8823), (2941, 7269)]