19911495

素因数分解:

$3^1\times 5^1\times {\mathrm{313}}^1\times {\mathrm{4241}}^1$

素因数の和:4562

約数の個数: 16

約数和(自身を含む): 31967712

約数和(自身を除く): 12056217

約数列:

[1, 3, 5, 15, 313, 939, 1565, 4241, 4695, 12723, 21205, 63615, 1327433, 3982299, 6637165, 19911495]

約数ペア:

[(1, 19911495), (3, 6637165), (5, 3982299), (15, 1327433), (313, 63615), (939, 21205), (1565, 12723), (4241, 4695)]