21517258

素因数分解:

$2^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{617}}^1$

素因数の和:726

約数の個数: 32

約数和(自身を含む): 38444544

約数和(自身を除く): 16927286

約数列:

[1, 2, 7, 14, 47, 53, 94, 106, 329, 371, 617, 658, 742, 1234, 2491, 4319, 4982, 8638, 17437, 28999, 32701, 34874, 57998, 65402, 202993, 228907, 405986, 457814, 1536947, 3073894, 10758629, 21517258]

約数ペア:

[(1, 21517258), (2, 10758629), (7, 3073894), (14, 1536947), (47, 457814), (53, 405986), (94, 228907), (106, 202993), (329, 65402), (371, 57998), (617, 34874), (658, 32701), (742, 28999), (1234, 17437), (2491, 8638), (4319, 4982)]