81255999

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1\times {\mathrm{431}}^1$

素因数の和:671

約数の個数: 32

約数和(自身を含む): 123171840

約数和(自身を除く): 41915841

約数列:

[1, 3, 11, 29, 33, 87, 197, 319, 431, 591, 957, 1293, 2167, 4741, 5713, 6501, 12499, 14223, 17139, 37497, 62843, 84907, 137489, 188529, 254721, 412467, 933977, 2462303, 2801931, 7386909, 27085333, 81255999]

約数ペア:

[(1, 81255999), (3, 27085333), (11, 7386909), (29, 2801931), (33, 2462303), (87, 933977), (197, 412467), (319, 254721), (431, 188529), (591, 137489), (957, 84907), (1293, 62843), (2167, 37497), (4741, 17139), (5713, 14223), (6501, 12499)]