1997307

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{397}}^1$

素因数の和:459

約数の個数: 24

約数和(自身を含む): 3187184

約数和(自身を除く): 1189877

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 387, 397, 559, 1191, 1677, 3573, 5031, 5161, 15483, 17071, 46449, 51213, 153639, 221923, 665769, 1997307]

約数ペア:

[(1, 1997307), (3, 665769), (9, 221923), (13, 153639), (39, 51213), (43, 46449), (117, 17071), (129, 15483), (387, 5161), (397, 5031), (559, 3573), (1191, 1677)]