18120879

素因数分解:

$3^2\times 7^1\times {\mathrm{383}}^1\times {\mathrm{751}}^1$

素因数の和:1147

約数の個数: 24

約数和(自身を含む): 30031872

約数和(自身を除く): 11910993

約数列:

[1, 3, 7, 9, 21, 63, 383, 751, 1149, 2253, 2681, 3447, 5257, 6759, 8043, 15771, 24129, 47313, 287633, 862899, 2013431, 2588697, 6040293, 18120879]

約数ペア:

[(1, 18120879), (3, 6040293), (7, 2588697), (9, 2013431), (21, 862899), (63, 287633), (383, 47313), (751, 24129), (1149, 15771), (2253, 8043), (2681, 6759), (3447, 5257)]