18778239

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{431}}^1$

素因数の和:587

約数の個数: 24

約数和(自身を含む): 28035072

約数和(自身を除く): 9256833

約数列:

[1, 3, 9, 47, 103, 141, 309, 423, 431, 927, 1293, 3879, 4841, 14523, 20257, 43569, 44393, 60771, 133179, 182313, 399537, 2086471, 6259413, 18778239]

約数ペア:

[(1, 18778239), (3, 6259413), (9, 2086471), (47, 399537), (103, 182313), (141, 133179), (309, 60771), (423, 44393), (431, 43569), (927, 20257), (1293, 14523), (3879, 4841)]