638852876

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{197}}^1\times {\mathrm{349}}^1$

素因数の和:674

約数の個数: 48

約数和(自身を含む): 1187524800

約数和(自身を除く): 548671924

約数列:

[1, 2, 4, 23, 46, 92, 101, 197, 202, 349, 394, 404, 698, 788, 1396, 2323, 4531, 4646, 8027, 9062, 9292, 16054, 18124, 19897, 32108, 35249, 39794, 68753, 70498, 79588, 137506, 140996, 275012, 457631, 810727, 915262, 1581319, 1621454, 1830524, 3162638, 3242908, 6325276, 6944053, 13888106, 27776212, 159713219, 319426438, 638852876]

約数ペア:

[(1, 638852876), (2, 319426438), (4, 159713219), (23, 27776212), (46, 13888106), (92, 6944053), (101, 6325276), (197, 3242908), (202, 3162638), (349, 1830524), (394, 1621454), (404, 1581319), (698, 915262), (788, 810727), (1396, 457631), (2323, 275012), (4531, 140996), (4646, 137506), (8027, 79588), (9062, 70498), (9292, 68753), (16054, 39794), (18124, 35249), (19897, 32108)]