20895490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{2467}}^1$

素因数の和:2503

約数の個数: 48

約数和(自身を含む): 47267136

約数和(自身を除く): 26371646

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 121, 154, 242, 385, 605, 770, 847, 1210, 1694, 2467, 4235, 4934, 8470, 12335, 17269, 24670, 27137, 34538, 54274, 86345, 135685, 172690, 189959, 271370, 298507, 379918, 597014, 949795, 1492535, 1899590, 2089549, 2985070, 4179098, 10447745, 20895490]

約数ペア:

[(1, 20895490), (2, 10447745), (5, 4179098), (7, 2985070), (10, 2089549), (11, 1899590), (14, 1492535), (22, 949795), (35, 597014), (55, 379918), (70, 298507), (77, 271370), (110, 189959), (121, 172690), (154, 135685), (242, 86345), (385, 54274), (605, 34538), (770, 27137), (847, 24670), (1210, 17269), (1694, 12335), (2467, 8470), (4235, 4934)]