20811714

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{421}}^1$

素因数の和:551

約数の個数: 64

約数和(自身を含む): 52503552

約数和(自身を除く): 31691838

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 77, 107, 154, 214, 231, 321, 421, 462, 642, 749, 842, 1177, 1263, 1498, 2247, 2354, 2526, 2947, 3531, 4494, 4631, 5894, 7062, 8239, 8841, 9262, 13893, 16478, 17682, 24717, 27786, 32417, 45047, 49434, 64834, 90094, 97251, 135141, 194502, 270282, 315329, 495517, 630658, 945987, 991034, 1486551, 1891974, 2973102, 3468619, 6937238, 10405857, 20811714]

約数ペア:

[(1, 20811714), (2, 10405857), (3, 6937238), (6, 3468619), (7, 2973102), (11, 1891974), (14, 1486551), (21, 991034), (22, 945987), (33, 630658), (42, 495517), (66, 315329), (77, 270282), (107, 194502), (154, 135141), (214, 97251), (231, 90094), (321, 64834), (421, 49434), (462, 45047), (642, 32417), (749, 27786), (842, 24717), (1177, 17682), (1263, 16478), (1498, 13893), (2247, 9262), (2354, 8841), (2526, 8239), (2947, 7062), (3531, 5894), (4494, 4631)]