81977145

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{2129}}^1$

素因数の和:2305

約数の個数: 32

約数和(自身を含む): 139864320

約数和(自身を除く): 57887175

約数列:

[1, 3, 5, 15, 17, 51, 85, 151, 255, 453, 755, 2129, 2265, 2567, 6387, 7701, 10645, 12835, 31935, 36193, 38505, 108579, 180965, 321479, 542895, 964437, 1607395, 4822185, 5465143, 16395429, 27325715, 81977145]

約数ペア:

[(1, 81977145), (3, 27325715), (5, 16395429), (15, 5465143), (17, 4822185), (51, 1607395), (85, 964437), (151, 542895), (255, 321479), (453, 180965), (755, 108579), (2129, 38505), (2265, 36193), (2567, 31935), (6387, 12835), (7701, 10645)]