18491247

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{5309}}^1$

素因数の和:5364

約数の個数: 20

約数和(自身を含む): 28270440

約数和(自身を除く): 9779193

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 5309, 15927, 47781, 143343, 228287, 430029, 684861, 2054583, 6163749, 18491247]

約数ペア:

[(1, 18491247), (3, 6163749), (9, 2054583), (27, 684861), (43, 430029), (81, 228287), (129, 143343), (387, 47781), (1161, 15927), (3483, 5309)]