20866653

素因数分解:

$3^5\times {\mathrm{43}}^1\times {\mathrm{1997}}^1$

素因数の和:2055

約数の個数: 24

約数和(自身を含む): 31999968

約数和(自身を除く): 11133315

約数列:

[1, 3, 9, 27, 43, 81, 129, 243, 387, 1161, 1997, 3483, 5991, 10449, 17973, 53919, 85871, 161757, 257613, 485271, 772839, 2318517, 6955551, 20866653]

約数ペア:

[(1, 20866653), (3, 6955551), (9, 2318517), (27, 772839), (43, 485271), (81, 257613), (129, 161757), (243, 85871), (387, 53919), (1161, 17973), (1997, 10449), (3483, 5991)]