17939385

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 32507904

約数和(自身を除く): 14568519

約数列:

[1, 3, 5, 9, 15, 43, 45, 73, 127, 129, 215, 219, 365, 381, 387, 635, 645, 657, 1095, 1143, 1905, 1935, 3139, 3285, 5461, 5715, 9271, 9417, 15695, 16383, 27305, 27813, 28251, 46355, 47085, 49149, 81915, 83439, 139065, 141255, 245745, 398653, 417195, 1195959, 1993265, 3587877, 5979795, 17939385]

約数ペア:

[(1, 17939385), (3, 5979795), (5, 3587877), (9, 1993265), (15, 1195959), (43, 417195), (45, 398653), (73, 245745), (127, 141255), (129, 139065), (215, 83439), (219, 81915), (365, 49149), (381, 47085), (387, 46355), (635, 28251), (645, 27813), (657, 27305), (1095, 16383), (1143, 15695), (1905, 9417), (1935, 9271), (3139, 5715), (3285, 5461)]