19988937

素因数分解:

$3^5\times {\mathrm{43}}^1\times {\mathrm{1913}}^1$

素因数の和:1971

約数の個数: 24

約数和(自身を含む): 30654624

約数和(自身を除く): 10665687

約数列:

[1, 3, 9, 27, 43, 81, 129, 243, 387, 1161, 1913, 3483, 5739, 10449, 17217, 51651, 82259, 154953, 246777, 464859, 740331, 2220993, 6662979, 19988937]

約数ペア:

[(1, 19988937), (3, 6662979), (9, 2220993), (27, 740331), (43, 464859), (81, 246777), (129, 154953), (243, 82259), (387, 51651), (1161, 17217), (1913, 10449), (3483, 5739)]