21098151

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{13709}}^1$

素因数の和:13740

約数の個数: 20

約数和(自身を含む): 33178200

約数和(自身を除く): 12080049

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 13709, 41127, 123381, 260471, 370143, 781413, 1110429, 2344239, 7032717, 21098151]

約数ペア:

[(1, 21098151), (3, 7032717), (9, 2344239), (19, 1110429), (27, 781413), (57, 370143), (81, 260471), (171, 123381), (513, 41127), (1539, 13709)]