20197809

素因数分解:

$3^3\times {\mathrm{109}}^1\times {\mathrm{6863}}^1$

素因数の和:6981

約数の個数: 16

約数和(自身を含む): 30201600

約数和(自身を除く): 10003791

約数列:

[1, 3, 9, 27, 109, 327, 981, 2943, 6863, 20589, 61767, 185301, 748067, 2244201, 6732603, 20197809]

約数ペア:

[(1, 20197809), (3, 6732603), (9, 2244201), (27, 748067), (109, 185301), (327, 61767), (981, 20589), (2943, 6863)]