198857890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2557}}^1$

素因数の和:2683

約数の個数: 64

約数和(自身を含む): 450862848

約数和(自身を除く): 252004958

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 101, 110, 154, 202, 385, 505, 707, 770, 1010, 1111, 1414, 2222, 2557, 3535, 5114, 5555, 7070, 7777, 11110, 12785, 15554, 17899, 25570, 28127, 35798, 38885, 56254, 77770, 89495, 140635, 178990, 196889, 258257, 281270, 393778, 516514, 984445, 1291285, 1807799, 1968890, 2582570, 2840827, 3615598, 5681654, 9038995, 14204135, 18077990, 19885789, 28408270, 39771578, 99428945, 198857890]

約数ペア:

[(1, 198857890), (2, 99428945), (5, 39771578), (7, 28408270), (10, 19885789), (11, 18077990), (14, 14204135), (22, 9038995), (35, 5681654), (55, 3615598), (70, 2840827), (77, 2582570), (101, 1968890), (110, 1807799), (154, 1291285), (202, 984445), (385, 516514), (505, 393778), (707, 281270), (770, 258257), (1010, 196889), (1111, 178990), (1414, 140635), (2222, 89495), (2557, 77770), (3535, 56254), (5114, 38885), (5555, 35798), (7070, 28127), (7777, 25570), (11110, 17899), (12785, 15554)]