720484144

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{499}}^1$

素因数の和:650

約数の個数: 80

約数和(自身を含む): 1499904000

約数和(自身を除く): 779419856

約数列:

[1, 2, 4, 8, 16, 31, 41, 62, 71, 82, 124, 142, 164, 248, 284, 328, 496, 499, 568, 656, 998, 1136, 1271, 1996, 2201, 2542, 2911, 3992, 4402, 5084, 5822, 7984, 8804, 10168, 11644, 15469, 17608, 20336, 20459, 23288, 30938, 35216, 35429, 40918, 46576, 61876, 70858, 81836, 90241, 123752, 141716, 163672, 180482, 247504, 283432, 327344, 360964, 566864, 634229, 721928, 1098299, 1268458, 1443856, 1452589, 2196598, 2536916, 2905178, 4393196, 5073832, 5810356, 8786392, 10147664, 11620712, 17572784, 23241424, 45030259, 90060518, 180121036, 360242072, 720484144]

約数ペア:

[(1, 720484144), (2, 360242072), (4, 180121036), (8, 90060518), (16, 45030259), (31, 23241424), (41, 17572784), (62, 11620712), (71, 10147664), (82, 8786392), (124, 5810356), (142, 5073832), (164, 4393196), (248, 2905178), (284, 2536916), (328, 2196598), (496, 1452589), (499, 1443856), (568, 1268458), (656, 1098299), (998, 721928), (1136, 634229), (1271, 566864), (1996, 360964), (2201, 327344), (2542, 283432), (2911, 247504), (3992, 180482), (4402, 163672), (5084, 141716), (5822, 123752), (7984, 90241), (8804, 81836), (10168, 70858), (11644, 61876), (15469, 46576), (17608, 40918), (20336, 35429), (20459, 35216), (23288, 30938)]