19990005

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{3121}}^1$

素因数の和:3197

約数の個数: 32

約数和(自身を含む): 37164288

約数和(自身を除く): 17174283

約数列:

[1, 3, 5, 7, 15, 21, 35, 61, 105, 183, 305, 427, 915, 1281, 2135, 3121, 6405, 9363, 15605, 21847, 46815, 65541, 109235, 190381, 327705, 571143, 951905, 1332667, 2855715, 3998001, 6663335, 19990005]

約数ペア:

[(1, 19990005), (3, 6663335), (5, 3998001), (7, 2855715), (15, 1332667), (21, 951905), (35, 571143), (61, 327705), (105, 190381), (183, 109235), (305, 65541), (427, 46815), (915, 21847), (1281, 15605), (2135, 9363), (3121, 6405)]