20994639540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{491}}^1\times {\mathrm{101807}}^1$

素因数の和:102317

約数の個数: 96

約数和(自身を含む): 67320336384

約数和(自身を除く): 46325696844

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 491, 982, 1473, 1964, 2455, 2946, 3437, 4910, 5892, 6874, 7365, 9820, 10311, 13748, 14730, 17185, 20622, 29460, 34370, 41244, 51555, 68740, 101807, 103110, 203614, 206220, 305421, 407228, 509035, 610842, 712649, 1018070, 1221684, 1425298, 1527105, 2036140, 2137947, 2850596, 3054210, 3563245, 4275894, 6108420, 7126490, 8551788, 10689735, 14252980, 21379470, 42758940, 49987237, 99974474, 149961711, 199948948, 249936185, 299923422, 349910659, 499872370, 599846844, 699821318, 749808555, 999744740, 1049731977, 1399642636, 1499617110, 1749553295, 2099463954, 2999234220, 3499106590, 4198927908, 5248659885, 6998213180, 10497319770, 20994639540]

約数ペア:

[(1, 20994639540), (2, 10497319770), (3, 6998213180), (4, 5248659885), (5, 4198927908), (6, 3499106590), (7, 2999234220), (10, 2099463954), (12, 1749553295), (14, 1499617110), (15, 1399642636), (20, 1049731977), (21, 999744740), (28, 749808555), (30, 699821318), (35, 599846844), (42, 499872370), (60, 349910659), (70, 299923422), (84, 249936185), (105, 199948948), (140, 149961711), (210, 99974474), (420, 49987237), (491, 42758940), (982, 21379470), (1473, 14252980), (1964, 10689735), (2455, 8551788), (2946, 7126490), (3437, 6108420), (4910, 4275894), (5892, 3563245), (6874, 3054210), (7365, 2850596), (9820, 2137947), (10311, 2036140), (13748, 1527105), (14730, 1425298), (17185, 1221684), (20622, 1018070), (29460, 712649), (34370, 610842), (41244, 509035), (51555, 407228), (68740, 305421), (101807, 206220), (103110, 203614)]