20495817

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{1009}}^1$

素因数の和:1113

約数の個数: 24

約数和(自身を含む): 30934280

約数和(自身を除く): 10438463

約数列:

[1, 3, 9, 37, 61, 111, 183, 333, 549, 1009, 2257, 3027, 6771, 9081, 20313, 37333, 61549, 111999, 184647, 335997, 553941, 2277313, 6831939, 20495817]

約数ペア:

[(1, 20495817), (3, 6831939), (9, 2277313), (37, 553941), (61, 335997), (111, 184647), (183, 111999), (333, 61549), (549, 37333), (1009, 20313), (2257, 9081), (3027, 6771)]