21812758

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{211}}^1$

素因数の和:388

約数の個数: 32

約数和(自身を含む): 37122048

約数和(自身を除く): 15309290

約数列:

[1, 2, 11, 22, 37, 74, 127, 211, 254, 407, 422, 814, 1397, 2321, 2794, 4642, 4699, 7807, 9398, 15614, 26797, 51689, 53594, 85877, 103378, 171754, 294767, 589534, 991489, 1982978, 10906379, 21812758]

約数ペア:

[(1, 21812758), (2, 10906379), (11, 1982978), (22, 991489), (37, 589534), (74, 294767), (127, 171754), (211, 103378), (254, 85877), (407, 53594), (422, 51689), (814, 26797), (1397, 15614), (2321, 9398), (2794, 7807), (4642, 4699)]