81212817

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{823}}^1$

素因数の和:997

約数の個数: 32

約数和(自身を含む): 128253952

約数和(自身を除く): 47041135

約数列:

[1, 3, 7, 21, 37, 111, 127, 259, 381, 777, 823, 889, 2469, 2667, 4699, 5761, 14097, 17283, 30451, 32893, 91353, 98679, 104521, 213157, 313563, 639471, 731647, 2194941, 3867277, 11601831, 27070939, 81212817]

約数ペア:

[(1, 81212817), (3, 27070939), (7, 11601831), (21, 3867277), (37, 2194941), (111, 731647), (127, 639471), (259, 313563), (381, 213157), (777, 104521), (823, 98679), (889, 91353), (2469, 32893), (2667, 30451), (4699, 17283), (5761, 14097)]