19688391

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{227}}^1\times {\mathrm{419}}^1$

素因数の和:675

約数の個数: 24

約数和(自身を含む): 29877120

約数和(自身を除く): 10188729

約数列:

[1, 3, 9, 23, 69, 207, 227, 419, 681, 1257, 2043, 3771, 5221, 9637, 15663, 28911, 46989, 86733, 95113, 285339, 856017, 2187599, 6562797, 19688391]

約数ペア:

[(1, 19688391), (3, 6562797), (9, 2187599), (23, 856017), (69, 285339), (207, 95113), (227, 86733), (419, 46989), (681, 28911), (1257, 15663), (2043, 9637), (3771, 5221)]