664355984

素因数分解:

$2^4\times {\mathrm{173}}^1\times {\mathrm{389}}^1\times {\mathrm{617}}^1$

素因数の和:1187

約数の個数: 40

約数和(自身を含む): 1300061880

約数和(自身を除く): 635705896

約数列:

[1, 2, 4, 8, 16, 173, 346, 389, 617, 692, 778, 1234, 1384, 1556, 2468, 2768, 3112, 4936, 6224, 9872, 67297, 106741, 134594, 213482, 240013, 269188, 426964, 480026, 538376, 853928, 960052, 1076752, 1707856, 1920104, 3840208, 41522249, 83044498, 166088996, 332177992, 664355984]

約数ペア:

[(1, 664355984), (2, 332177992), (4, 166088996), (8, 83044498), (16, 41522249), (173, 3840208), (346, 1920104), (389, 1707856), (617, 1076752), (692, 960052), (778, 853928), (1234, 538376), (1384, 480026), (1556, 426964), (2468, 269188), (2768, 240013), (3112, 213482), (4936, 134594), (6224, 106741), (9872, 67297)]