218979145

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{1783}}^1$

素因数の和:1846

約数の個数: 48

約数和(自身を含む): 341671680

約数和(自身を除く): 122692535

約数列:

[1, 5, 7, 11, 29, 35, 55, 77, 121, 145, 203, 319, 385, 605, 847, 1015, 1595, 1783, 2233, 3509, 4235, 8915, 11165, 12481, 17545, 19613, 24563, 51707, 62405, 98065, 122815, 137291, 215743, 258535, 361949, 568777, 686455, 1078715, 1510201, 1809745, 2843885, 3981439, 6256547, 7551005, 19907195, 31282735, 43795829, 218979145]

約数ペア:

[(1, 218979145), (5, 43795829), (7, 31282735), (11, 19907195), (29, 7551005), (35, 6256547), (55, 3981439), (77, 2843885), (121, 1809745), (145, 1510201), (203, 1078715), (319, 686455), (385, 568777), (605, 361949), (847, 258535), (1015, 215743), (1595, 137291), (1783, 122815), (2233, 98065), (3509, 62405), (4235, 51707), (8915, 24563), (11165, 19613), (12481, 17545)]