20950672

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{293}}^1$

素因数の和:451

約数の個数: 40

約数和(自身を含む): 42106680

約数和(自身を除く): 21156008

約数列:

[1, 2, 4, 8, 16, 41, 82, 109, 164, 218, 293, 328, 436, 586, 656, 872, 1172, 1744, 2344, 4469, 4688, 8938, 12013, 17876, 24026, 31937, 35752, 48052, 63874, 71504, 96104, 127748, 192208, 255496, 510992, 1309417, 2618834, 5237668, 10475336, 20950672]

約数ペア:

[(1, 20950672), (2, 10475336), (4, 5237668), (8, 2618834), (16, 1309417), (41, 510992), (82, 255496), (109, 192208), (164, 127748), (218, 96104), (293, 71504), (328, 63874), (436, 48052), (586, 35752), (656, 31937), (872, 24026), (1172, 17876), (1744, 12013), (2344, 8938), (4469, 4688)]