19461988

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{421}}^1$

素因数の和:572

約数の個数: 48

約数和(自身を含む): 42348544

約数和(自身を除く): 22886556

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 127, 182, 254, 364, 421, 508, 842, 889, 1651, 1684, 1778, 2947, 3302, 3556, 5473, 5894, 6604, 10946, 11557, 11788, 21892, 23114, 38311, 46228, 53467, 76622, 106934, 153244, 213868, 374269, 695071, 748538, 1390142, 1497076, 2780284, 4865497, 9730994, 19461988]

約数ペア:

[(1, 19461988), (2, 9730994), (4, 4865497), (7, 2780284), (13, 1497076), (14, 1390142), (26, 748538), (28, 695071), (52, 374269), (91, 213868), (127, 153244), (182, 106934), (254, 76622), (364, 53467), (421, 46228), (508, 38311), (842, 23114), (889, 21892), (1651, 11788), (1684, 11557), (1778, 10946), (2947, 6604), (3302, 5894), (3556, 5473)]