81274185

素因数分解:

$3^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{2749}}^1$

素因数の和:2839

約数の個数: 40

約数和(自身を含む): 147741000

約数和(自身を除く): 66466815

約数列:

[1, 3, 5, 9, 15, 27, 45, 73, 81, 135, 219, 365, 405, 657, 1095, 1971, 2749, 3285, 5913, 8247, 9855, 13745, 24741, 29565, 41235, 74223, 123705, 200677, 222669, 371115, 602031, 1003385, 1113345, 1806093, 3010155, 5418279, 9030465, 16254837, 27091395, 81274185]

約数ペア:

[(1, 81274185), (3, 27091395), (5, 16254837), (9, 9030465), (15, 5418279), (27, 3010155), (45, 1806093), (73, 1113345), (81, 1003385), (135, 602031), (219, 371115), (365, 222669), (405, 200677), (657, 123705), (1095, 74223), (1971, 41235), (2749, 29565), (3285, 24741), (5913, 13745), (8247, 9855)]