81147255

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{3923}}^1$

素因数の和:4135

約数の個数: 32

約数和(自身を含む): 149174784

約数和(自身を除く): 68027529

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 197, 591, 985, 1379, 2955, 3923, 4137, 6895, 11769, 19615, 20685, 27461, 58845, 82383, 137305, 411915, 772831, 2318493, 3864155, 5409817, 11592465, 16229451, 27049085, 81147255]

約数ペア:

[(1, 81147255), (3, 27049085), (5, 16229451), (7, 11592465), (15, 5409817), (21, 3864155), (35, 2318493), (105, 772831), (197, 411915), (591, 137305), (985, 82383), (1379, 58845), (2955, 27461), (3923, 20685), (4137, 19615), (6895, 11769)]