208280520483

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{474983}}^1$

素因数の和:475176

約数の個数: 48

約数和(自身を含む): 342216472320

約数和(自身を除く): 133935951837

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 157, 399, 471, 931, 1099, 2793, 2983, 3297, 7693, 8949, 20881, 23079, 62643, 146167, 438501, 474983, 1424949, 3324881, 9024677, 9974643, 23274167, 27074031, 63172739, 69822501, 74572331, 189518217, 223716993, 442209173, 522006317, 1326627519, 1416874289, 1566018951, 3654044219, 4250622867, 9918120023, 10962132657, 29754360069, 69426840161, 208280520483]

約数ペア:

[(1, 208280520483), (3, 69426840161), (7, 29754360069), (19, 10962132657), (21, 9918120023), (49, 4250622867), (57, 3654044219), (133, 1566018951), (147, 1416874289), (157, 1326627519), (399, 522006317), (471, 442209173), (931, 223716993), (1099, 189518217), (2793, 74572331), (2983, 69822501), (3297, 63172739), (7693, 27074031), (8949, 23274167), (20881, 9974643), (23079, 9024677), (62643, 3324881), (146167, 1424949), (438501, 474983)]