18503996

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{337}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 38840256

約数和(自身を除く): 20336260

約数列:

[1, 2, 4, 7, 14, 28, 37, 53, 74, 106, 148, 212, 259, 337, 371, 518, 674, 742, 1036, 1348, 1484, 1961, 2359, 3922, 4718, 7844, 9436, 12469, 13727, 17861, 24938, 27454, 35722, 49876, 54908, 71444, 87283, 125027, 174566, 250054, 349132, 500108, 660857, 1321714, 2643428, 4625999, 9251998, 18503996]

約数ペア:

[(1, 18503996), (2, 9251998), (4, 4625999), (7, 2643428), (14, 1321714), (28, 660857), (37, 500108), (53, 349132), (74, 250054), (106, 174566), (148, 125027), (212, 87283), (259, 71444), (337, 54908), (371, 49876), (518, 35722), (674, 27454), (742, 24938), (1036, 17861), (1348, 13727), (1484, 12469), (1961, 9436), (2359, 7844), (3922, 4718)]