18944007

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:275

約数の個数: 32

約数和(自身を含む): 28016640

約数和(自身を除く): 9072633

約数列:

[1, 3, 19, 31, 57, 71, 93, 151, 213, 453, 589, 1349, 1767, 2201, 2869, 4047, 4681, 6603, 8607, 10721, 14043, 32163, 41819, 88939, 125457, 203699, 266817, 332351, 611097, 997053, 6314669, 18944007]

約数ペア:

[(1, 18944007), (3, 6314669), (19, 997053), (31, 611097), (57, 332351), (71, 266817), (93, 203699), (151, 125457), (213, 88939), (453, 41819), (589, 32163), (1349, 14043), (1767, 10721), (2201, 8607), (2869, 6603), (4047, 4681)]