19913740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{193}}^1$

素因数の和:287

約数の個数: 96

約数和(自身を含む): 53190144

約数和(自身を除く): 33276404

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 67, 70, 77, 110, 134, 140, 154, 193, 220, 268, 308, 335, 385, 386, 469, 670, 737, 770, 772, 938, 965, 1340, 1351, 1474, 1540, 1876, 1930, 2123, 2345, 2702, 2948, 3685, 3860, 4246, 4690, 5159, 5404, 6755, 7370, 8492, 9380, 10318, 10615, 12931, 13510, 14740, 14861, 20636, 21230, 25795, 25862, 27020, 29722, 42460, 51590, 51724, 59444, 64655, 74305, 90517, 103180, 129310, 142241, 148610, 181034, 258620, 284482, 297220, 362068, 452585, 568964, 711205, 905170, 995687, 1422410, 1810340, 1991374, 2844820, 3982748, 4978435, 9956870, 19913740]

約数ペア:

[(1, 19913740), (2, 9956870), (4, 4978435), (5, 3982748), (7, 2844820), (10, 1991374), (11, 1810340), (14, 1422410), (20, 995687), (22, 905170), (28, 711205), (35, 568964), (44, 452585), (55, 362068), (67, 297220), (70, 284482), (77, 258620), (110, 181034), (134, 148610), (140, 142241), (154, 129310), (193, 103180), (220, 90517), (268, 74305), (308, 64655), (335, 59444), (385, 51724), (386, 51590), (469, 42460), (670, 29722), (737, 27020), (770, 25862), (772, 25795), (938, 21230), (965, 20636), (1340, 14861), (1351, 14740), (1474, 13510), (1540, 12931), (1876, 10615), (1930, 10318), (2123, 9380), (2345, 8492), (2702, 7370), (2948, 6755), (3685, 5404), (3860, 5159), (4246, 4690)]