21847516

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{229}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 43122240

約数和(自身を除く): 21274724

約数列:

[1, 2, 4, 17, 23, 34, 46, 61, 68, 92, 122, 229, 244, 391, 458, 782, 916, 1037, 1403, 1564, 2074, 2806, 3893, 4148, 5267, 5612, 7786, 10534, 13969, 15572, 21068, 23851, 27938, 47702, 55876, 89539, 95404, 179078, 237473, 321287, 358156, 474946, 642574, 949892, 1285148, 5461879, 10923758, 21847516]

約数ペア:

[(1, 21847516), (2, 10923758), (4, 5461879), (17, 1285148), (23, 949892), (34, 642574), (46, 474946), (61, 358156), (68, 321287), (92, 237473), (122, 179078), (229, 95404), (244, 89539), (391, 55876), (458, 47702), (782, 27938), (916, 23851), (1037, 21068), (1403, 15572), (1564, 13969), (2074, 10534), (2806, 7786), (3893, 5612), (4148, 5267)]