18138237

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{277}}^1$

素因数の和:389

約数の個数: 32

約数和(自身を含む): 27648768

約数和(自身を除く): 9510531

約数列:

[1, 3, 13, 23, 39, 69, 73, 219, 277, 299, 831, 897, 949, 1679, 2847, 3601, 5037, 6371, 10803, 19113, 20221, 21827, 60663, 65481, 82823, 248469, 262873, 465083, 788619, 1395249, 6046079, 18138237]

約数ペア:

[(1, 18138237), (3, 6046079), (13, 1395249), (23, 788619), (39, 465083), (69, 262873), (73, 248469), (219, 82823), (277, 65481), (299, 60663), (831, 21827), (897, 20221), (949, 19113), (1679, 10803), (2847, 6371), (3601, 5037)]