200019920

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{19687}}^1$

素因数の和:19827

約数の個数: 40

約数和(自身を含む): 468731904

約数和(自身を除く): 268711984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2032, 2540, 5080, 10160, 19687, 39374, 78748, 98435, 157496, 196870, 314992, 393740, 787480, 1574960, 2500249, 5000498, 10000996, 12501245, 20001992, 25002490, 40003984, 50004980, 100009960, 200019920]

約数ペア:

[(1, 200019920), (2, 100009960), (4, 50004980), (5, 40003984), (8, 25002490), (10, 20001992), (16, 12501245), (20, 10000996), (40, 5000498), (80, 2500249), (127, 1574960), (254, 787480), (508, 393740), (635, 314992), (1016, 196870), (1270, 157496), (2032, 98435), (2540, 78748), (5080, 39374), (10160, 19687)]