18318861

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 30670848

約数和(自身を除く): 12351987

約数列:

[1, 3, 9, 11, 31, 33, 47, 93, 99, 127, 141, 279, 341, 381, 423, 517, 1023, 1143, 1397, 1457, 1551, 3069, 3937, 4191, 4371, 4653, 5969, 11811, 12573, 13113, 16027, 17907, 35433, 43307, 48081, 53721, 65659, 129921, 144243, 185039, 196977, 389763, 555117, 590931, 1665351, 2035429, 6106287, 18318861]

約数ペア:

[(1, 18318861), (3, 6106287), (9, 2035429), (11, 1665351), (31, 590931), (33, 555117), (47, 389763), (93, 196977), (99, 185039), (127, 144243), (141, 129921), (279, 65659), (341, 53721), (381, 48081), (423, 43307), (517, 35433), (1023, 17907), (1143, 16027), (1397, 13113), (1457, 12573), (1551, 11811), (3069, 5969), (3937, 4653), (4191, 4371)]