18123957

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{113}}^1\times {\mathrm{251}}^1$

素因数の和:441

約数の個数: 24

約数和(自身を含む): 26889408

約数和(自身を除く): 8765451

約数列:

[1, 3, 9, 71, 113, 213, 251, 339, 639, 753, 1017, 2259, 8023, 17821, 24069, 28363, 53463, 72207, 85089, 160389, 255267, 2013773, 6041319, 18123957]

約数ペア:

[(1, 18123957), (3, 6041319), (9, 2013773), (71, 255267), (113, 160389), (213, 85089), (251, 72207), (339, 53463), (639, 28363), (753, 24069), (1017, 17821), (2259, 8023)]