81557955

素因数分解:

$3^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{3163}}^1$

素因数の和:3368

約数の個数: 32

約数和(自身を含む): 145797120

約数和(自身を除く): 64239165

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 191, 573, 955, 1719, 2865, 3163, 5157, 8595, 9489, 15815, 25785, 28467, 47445, 85401, 142335, 427005, 604133, 1812399, 3020665, 5437197, 9061995, 16311591, 27185985, 81557955]

約数ペア:

[(1, 81557955), (3, 27185985), (5, 16311591), (9, 9061995), (15, 5437197), (27, 3020665), (45, 1812399), (135, 604133), (191, 427005), (573, 142335), (955, 85401), (1719, 47445), (2865, 28467), (3163, 25785), (5157, 15815), (8595, 9489)]