2587481180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{991}}^1\times {\mathrm{6871}}^1$

素因数の和:7890

約数の個数: 48

約数和(自身を含む): 5726300160

約数和(自身を除く): 3138818980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 991, 1982, 3964, 4955, 6871, 9910, 13742, 18829, 19820, 27484, 34355, 37658, 68710, 75316, 94145, 130549, 137420, 188290, 261098, 376580, 522196, 652745, 1305490, 2610980, 6809161, 13618322, 27236644, 34045805, 68091610, 129374059, 136183220, 258748118, 517496236, 646870295, 1293740590, 2587481180]

約数ペア:

[(1, 2587481180), (2, 1293740590), (4, 646870295), (5, 517496236), (10, 258748118), (19, 136183220), (20, 129374059), (38, 68091610), (76, 34045805), (95, 27236644), (190, 13618322), (380, 6809161), (991, 2610980), (1982, 1305490), (3964, 652745), (4955, 522196), (6871, 376580), (9910, 261098), (13742, 188290), (18829, 137420), (19820, 130549), (27484, 94145), (34355, 75316), (37658, 68710)]