200020520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{449}}^1$

素因数の和:547

約数の個数: 128

約数和(自身を含む): 541728000

約数和(自身を除く): 341707480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 43, 56, 70, 74, 86, 140, 148, 172, 185, 215, 259, 280, 296, 301, 344, 370, 430, 449, 518, 602, 740, 860, 898, 1036, 1204, 1295, 1480, 1505, 1591, 1720, 1796, 2072, 2245, 2408, 2590, 3010, 3143, 3182, 3592, 4490, 5180, 6020, 6286, 6364, 7955, 8980, 10360, 11137, 12040, 12572, 12728, 15715, 15910, 16613, 17960, 19307, 22274, 25144, 31430, 31820, 33226, 38614, 44548, 55685, 62860, 63640, 66452, 77228, 83065, 89096, 96535, 111370, 116291, 125720, 132904, 135149, 154456, 166130, 193070, 222740, 232582, 270298, 332260, 386140, 445480, 465164, 540596, 581455, 664520, 675745, 714359, 772280, 930328, 1081192, 1162910, 1351490, 1428718, 2325820, 2702980, 2857436, 3571795, 4651640, 5000513, 5405960, 5714872, 7143590, 10001026, 14287180, 20002052, 25002565, 28574360, 40004104, 50005130, 100010260, 200020520]

約数ペア:

[(1, 200020520), (2, 100010260), (4, 50005130), (5, 40004104), (7, 28574360), (8, 25002565), (10, 20002052), (14, 14287180), (20, 10001026), (28, 7143590), (35, 5714872), (37, 5405960), (40, 5000513), (43, 4651640), (56, 3571795), (70, 2857436), (74, 2702980), (86, 2325820), (140, 1428718), (148, 1351490), (172, 1162910), (185, 1081192), (215, 930328), (259, 772280), (280, 714359), (296, 675745), (301, 664520), (344, 581455), (370, 540596), (430, 465164), (449, 445480), (518, 386140), (602, 332260), (740, 270298), (860, 232582), (898, 222740), (1036, 193070), (1204, 166130), (1295, 154456), (1480, 135149), (1505, 132904), (1591, 125720), (1720, 116291), (1796, 111370), (2072, 96535), (2245, 89096), (2408, 83065), (2590, 77228), (3010, 66452), (3143, 63640), (3182, 62860), (3592, 55685), (4490, 44548), (5180, 38614), (6020, 33226), (6286, 31820), (6364, 31430), (7955, 25144), (8980, 22274), (10360, 19307), (11137, 17960), (12040, 16613), (12572, 15910), (12728, 15715)]