21263889

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{293}}^1\times {\mathrm{1423}}^1$

素因数の和:1736

約数の個数: 16

約数和(自身を含む): 30143232

約数和(自身を除く): 8879343

約数列:

[1, 3, 17, 51, 293, 879, 1423, 4269, 4981, 14943, 24191, 72573, 416939, 1250817, 7087963, 21263889]

約数ペア:

[(1, 21263889), (3, 7087963), (17, 1250817), (51, 416939), (293, 72573), (879, 24191), (1423, 14943), (4269, 4981)]