18720423

素因数分解:

$3^3\times {\mathrm{109}}^1\times {\mathrm{6361}}^1$

素因数の和:6479

約数の個数: 16

約数和(自身を含む): 27992800

約数和(自身を除く): 9272377

約数列:

[1, 3, 9, 27, 109, 327, 981, 2943, 6361, 19083, 57249, 171747, 693349, 2080047, 6240141, 18720423]

約数ペア:

[(1, 18720423), (3, 6240141), (9, 2080047), (27, 693349), (109, 171747), (327, 57249), (981, 19083), (2943, 6361)]