20490008

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:121

約数の個数: 128

約数和(自身を含む): 52531200

約数和(自身を除く): 32041192

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 29, 31, 37, 44, 56, 58, 62, 74, 77, 88, 116, 124, 148, 154, 203, 217, 232, 248, 259, 296, 308, 319, 341, 406, 407, 434, 518, 616, 638, 682, 812, 814, 868, 899, 1036, 1073, 1147, 1276, 1364, 1624, 1628, 1736, 1798, 2072, 2146, 2233, 2294, 2387, 2552, 2728, 2849, 3256, 3596, 4292, 4466, 4588, 4774, 5698, 6293, 7192, 7511, 8029, 8584, 8932, 9176, 9548, 9889, 11396, 11803, 12586, 12617, 15022, 16058, 17864, 19096, 19778, 22792, 23606, 25172, 25234, 30044, 32116, 33263, 39556, 47212, 50344, 50468, 60088, 64232, 66526, 69223, 79112, 82621, 88319, 94424, 100936, 133052, 138446, 165242, 176638, 232841, 266104, 276892, 330484, 353276, 365893, 465682, 553784, 660968, 706552, 731786, 931364, 1463572, 1862728, 2561251, 2927144, 5122502, 10245004, 20490008]

約数ペア:

[(1, 20490008), (2, 10245004), (4, 5122502), (7, 2927144), (8, 2561251), (11, 1862728), (14, 1463572), (22, 931364), (28, 731786), (29, 706552), (31, 660968), (37, 553784), (44, 465682), (56, 365893), (58, 353276), (62, 330484), (74, 276892), (77, 266104), (88, 232841), (116, 176638), (124, 165242), (148, 138446), (154, 133052), (203, 100936), (217, 94424), (232, 88319), (248, 82621), (259, 79112), (296, 69223), (308, 66526), (319, 64232), (341, 60088), (406, 50468), (407, 50344), (434, 47212), (518, 39556), (616, 33263), (638, 32116), (682, 30044), (812, 25234), (814, 25172), (868, 23606), (899, 22792), (1036, 19778), (1073, 19096), (1147, 17864), (1276, 16058), (1364, 15022), (1624, 12617), (1628, 12586), (1736, 11803), (1798, 11396), (2072, 9889), (2146, 9548), (2233, 9176), (2294, 8932), (2387, 8584), (2552, 8029), (2728, 7511), (2849, 7192), (3256, 6293), (3596, 5698), (4292, 4774), (4466, 4588)]