19500887

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:207

約数の個数: 32

約数和(自身を含む): 25039872

約数和(自身を除く): 5538985

約数列:

[1, 7, 17, 37, 43, 103, 119, 259, 301, 629, 721, 731, 1591, 1751, 3811, 4403, 4429, 5117, 11137, 12257, 26677, 27047, 31003, 64787, 75293, 163873, 189329, 453509, 527051, 1147111, 2785841, 19500887]

約数ペア:

[(1, 19500887), (7, 2785841), (17, 1147111), (37, 527051), (43, 453509), (103, 189329), (119, 163873), (259, 75293), (301, 64787), (629, 31003), (721, 27047), (731, 26677), (1591, 12257), (1751, 11137), (3811, 5117), (4403, 4429)]