21807478

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1$

素因数の和:325

約数の個数: 64

約数和(自身を含む): 44582400

約数和(自身を除く): 22774922

約数列:

[1, 2, 7, 11, 14, 19, 22, 29, 38, 58, 77, 133, 154, 203, 209, 257, 266, 319, 406, 418, 514, 551, 638, 1102, 1463, 1799, 2233, 2827, 2926, 3598, 3857, 4466, 4883, 5654, 6061, 7453, 7714, 9766, 12122, 14906, 19789, 34181, 39578, 42427, 52171, 53713, 68362, 81983, 84854, 104342, 107426, 141607, 163966, 283214, 375991, 573881, 751982, 991249, 1147762, 1557677, 1982498, 3115354, 10903739, 21807478]

約数ペア:

[(1, 21807478), (2, 10903739), (7, 3115354), (11, 1982498), (14, 1557677), (19, 1147762), (22, 991249), (29, 751982), (38, 573881), (58, 375991), (77, 283214), (133, 163966), (154, 141607), (203, 107426), (209, 104342), (257, 84854), (266, 81983), (319, 68362), (406, 53713), (418, 52171), (514, 42427), (551, 39578), (638, 34181), (1102, 19789), (1463, 14906), (1799, 12122), (2233, 9766), (2827, 7714), (2926, 7453), (3598, 6061), (3857, 5654), (4466, 4883)]