18522981

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2081}}^1$

素因数の和:2153

約数の個数: 24

約数和(自身を含む): 28581696

約数和(自身を除く): 10058715

約数列:

[1, 3, 9, 23, 43, 69, 129, 207, 387, 989, 2081, 2967, 6243, 8901, 18729, 47863, 89483, 143589, 268449, 430767, 805347, 2058109, 6174327, 18522981]

約数ペア:

[(1, 18522981), (3, 6174327), (9, 2058109), (23, 805347), (43, 430767), (69, 268449), (129, 143589), (207, 89483), (387, 47863), (989, 18729), (2081, 8901), (2967, 6243)]