1720215

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:188

約数の個数: 48

約数和(自身を含む): 3514368

約数和(自身を除く): 1794153

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 43, 45, 63, 105, 127, 129, 215, 301, 315, 381, 387, 635, 645, 889, 903, 1143, 1505, 1905, 1935, 2667, 2709, 4445, 4515, 5461, 5715, 8001, 13335, 13545, 16383, 27305, 38227, 40005, 49149, 81915, 114681, 191135, 245745, 344043, 573405, 1720215]

約数ペア:

[(1, 1720215), (3, 573405), (5, 344043), (7, 245745), (9, 191135), (15, 114681), (21, 81915), (35, 49149), (43, 40005), (45, 38227), (63, 27305), (105, 16383), (127, 13545), (129, 13335), (215, 8001), (301, 5715), (315, 5461), (381, 4515), (387, 4445), (635, 2709), (645, 2667), (889, 1935), (903, 1905), (1143, 1505)]