20540786

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:159

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 19272334

約数列:

[1, 2, 7, 14, 19, 31, 38, 47, 53, 62, 94, 106, 133, 217, 266, 329, 371, 434, 589, 658, 742, 893, 1007, 1178, 1457, 1643, 1786, 2014, 2491, 2914, 3286, 4123, 4982, 6251, 7049, 8246, 10199, 11501, 12502, 14098, 17437, 20398, 23002, 27683, 31217, 34874, 47329, 55366, 62434, 77221, 94658, 154442, 193781, 218519, 331303, 387562, 437038, 540547, 662606, 1081094, 1467199, 2934398, 10270393, 20540786]

約数ペア:

[(1, 20540786), (2, 10270393), (7, 2934398), (14, 1467199), (19, 1081094), (31, 662606), (38, 540547), (47, 437038), (53, 387562), (62, 331303), (94, 218519), (106, 193781), (133, 154442), (217, 94658), (266, 77221), (329, 62434), (371, 55366), (434, 47329), (589, 34874), (658, 31217), (742, 27683), (893, 23002), (1007, 20398), (1178, 17437), (1457, 14098), (1643, 12502), (1786, 11501), (2014, 10199), (2491, 8246), (2914, 7049), (3286, 6251), (4123, 4982)]