668438211

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{6113}}^1$

素因数の和:6291

約数の個数: 32

約数和(自身を含む): 1051803648

約数和(自身を除く): 383365437

約数列:

[1, 3, 7, 21, 41, 123, 127, 287, 381, 861, 889, 2667, 5207, 6113, 15621, 18339, 36449, 42791, 109347, 128373, 250633, 751899, 776351, 1754431, 2329053, 5263293, 5434457, 16303371, 31830391, 95491173, 222812737, 668438211]

約数ペア:

[(1, 668438211), (3, 222812737), (7, 95491173), (21, 31830391), (41, 16303371), (123, 5434457), (127, 5263293), (287, 2329053), (381, 1754431), (861, 776351), (889, 751899), (2667, 250633), (5207, 128373), (6113, 109347), (15621, 42791), (18339, 36449)]