81520785

素因数分解:

$3^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{4657}}^1$

素因数の和:5057

約数の個数: 24

約数和(自身を含む): 141696360

約数和(自身を除く): 60175575

約数列:

[1, 3, 5, 9, 15, 45, 389, 1167, 1945, 3501, 4657, 5835, 13971, 17505, 23285, 41913, 69855, 209565, 1811573, 5434719, 9057865, 16304157, 27173595, 81520785]

約数ペア:

[(1, 81520785), (3, 27173595), (5, 16304157), (9, 9057865), (15, 5434719), (45, 1811573), (389, 209565), (1167, 69855), (1945, 41913), (3501, 23285), (4657, 17505), (5835, 13971)]