19215916

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 38102400

約数和(自身を除く): 18886484

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 107, 139, 214, 278, 323, 428, 556, 646, 1292, 1819, 2033, 2363, 2641, 3638, 4066, 4726, 5282, 7276, 8132, 9452, 10564, 14873, 29746, 34561, 44897, 59492, 69122, 89794, 138244, 179588, 252841, 282587, 505682, 565174, 1011364, 1130348, 4803979, 9607958, 19215916]

約数ペア:

[(1, 19215916), (2, 9607958), (4, 4803979), (17, 1130348), (19, 1011364), (34, 565174), (38, 505682), (68, 282587), (76, 252841), (107, 179588), (139, 138244), (214, 89794), (278, 69122), (323, 59492), (428, 44897), (556, 34561), (646, 29746), (1292, 14873), (1819, 10564), (2033, 9452), (2363, 8132), (2641, 7276), (3638, 5282), (4066, 4726)]