18964881

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{761}}^1$

素因数の和:854

約数の個数: 32

約数和(自身を含む): 30723840

約数和(自身を除く): 11758959

約数列:

[1, 3, 9, 13, 27, 39, 71, 117, 213, 351, 639, 761, 923, 1917, 2283, 2769, 6849, 8307, 9893, 20547, 24921, 29679, 54031, 89037, 162093, 267111, 486279, 702403, 1458837, 2107209, 6321627, 18964881]

約数ペア:

[(1, 18964881), (3, 6321627), (9, 2107209), (13, 1458837), (27, 702403), (39, 486279), (71, 267111), (117, 162093), (213, 89037), (351, 54031), (639, 29679), (761, 24921), (923, 20547), (1917, 9893), (2283, 8307), (2769, 6849)]