1991895

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^2\times {\mathrm{97}}^1$

素因数の和:179

約数の個数: 24

約数和(自身を含む): 3309264

約数和(自身を除く): 1317369

約数列:

[1, 3, 5, 15, 37, 97, 111, 185, 291, 485, 555, 1369, 1455, 3589, 4107, 6845, 10767, 17945, 20535, 53835, 132793, 398379, 663965, 1991895]

約数ペア:

[(1, 1991895), (3, 663965), (5, 398379), (15, 132793), (37, 53835), (97, 20535), (111, 17945), (185, 10767), (291, 6845), (485, 4107), (555, 3589), (1369, 1455)]