19801485

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{367}}^1$

素因数の和:498

約数の個数: 48

約数和(自身を含む): 37889280

約数和(自身を除く): 18087795

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 109, 165, 327, 367, 495, 545, 981, 1101, 1199, 1635, 1835, 3303, 3597, 4037, 4905, 5505, 5995, 10791, 12111, 16515, 17985, 20185, 36333, 40003, 53955, 60555, 120009, 181665, 200015, 360027, 440033, 600045, 1320099, 1800135, 2200165, 3960297, 6600495, 19801485]

約数ペア:

[(1, 19801485), (3, 6600495), (5, 3960297), (9, 2200165), (11, 1800135), (15, 1320099), (33, 600045), (45, 440033), (55, 360027), (99, 200015), (109, 181665), (165, 120009), (327, 60555), (367, 53955), (495, 40003), (545, 36333), (981, 20185), (1101, 17985), (1199, 16515), (1635, 12111), (1835, 10791), (3303, 5995), (3597, 5505), (4037, 4905)]