18431649

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{491}}^1$

素因数の和:637

約数の個数: 24

約数和(自身を含む): 27579552

約数和(自身を除く): 9147903

約数列:

[1, 3, 9, 43, 97, 129, 291, 387, 491, 873, 1473, 4171, 4419, 12513, 21113, 37539, 47627, 63339, 142881, 190017, 428643, 2047961, 6143883, 18431649]

約数ペア:

[(1, 18431649), (3, 6143883), (9, 2047961), (43, 428643), (97, 190017), (129, 142881), (291, 63339), (387, 47627), (491, 37539), (873, 21113), (1473, 12513), (4171, 4419)]