18117981

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{9277}}^1$

素因数の和:9321

約数の個数: 24

約数和(自身を含む): 30877184

約数和(自身を除く): 12759203

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 9277, 27831, 64939, 83493, 194817, 287587, 584451, 862761, 2013109, 2588283, 6039327, 18117981]

約数ペア:

[(1, 18117981), (3, 6039327), (7, 2588283), (9, 2013109), (21, 862761), (31, 584451), (63, 287587), (93, 194817), (217, 83493), (279, 64939), (651, 27831), (1953, 9277)]