261373112

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{257}}^1$

素因数の和:421

約数の個数: 128

約数和(自身を含む): 665763840

約数和(自身を除く): 404390728

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 22, 26, 28, 44, 52, 56, 77, 88, 91, 104, 127, 143, 154, 182, 254, 257, 286, 308, 364, 508, 514, 572, 616, 728, 889, 1001, 1016, 1028, 1144, 1397, 1651, 1778, 1799, 2002, 2056, 2794, 2827, 3302, 3341, 3556, 3598, 4004, 5588, 5654, 6604, 6682, 7112, 7196, 8008, 9779, 11176, 11308, 11557, 13208, 13364, 14392, 18161, 19558, 19789, 22616, 23114, 23387, 26728, 32639, 36322, 36751, 39116, 39578, 46228, 46774, 65278, 72644, 73502, 78232, 79156, 92456, 93548, 127127, 130556, 145288, 147004, 158312, 187096, 228473, 254254, 257257, 261112, 294008, 359029, 424307, 456946, 508508, 514514, 718058, 848614, 913892, 1017016, 1029028, 1436116, 1697228, 1827784, 2058056, 2513203, 2872232, 2970149, 3394456, 4667377, 5026406, 5940298, 9334754, 10052812, 11880596, 18669508, 20105624, 23761192, 32671639, 37339016, 65343278, 130686556, 261373112]

約数ペア:

[(1, 261373112), (2, 130686556), (4, 65343278), (7, 37339016), (8, 32671639), (11, 23761192), (13, 20105624), (14, 18669508), (22, 11880596), (26, 10052812), (28, 9334754), (44, 5940298), (52, 5026406), (56, 4667377), (77, 3394456), (88, 2970149), (91, 2872232), (104, 2513203), (127, 2058056), (143, 1827784), (154, 1697228), (182, 1436116), (254, 1029028), (257, 1017016), (286, 913892), (308, 848614), (364, 718058), (508, 514514), (514, 508508), (572, 456946), (616, 424307), (728, 359029), (889, 294008), (1001, 261112), (1016, 257257), (1028, 254254), (1144, 228473), (1397, 187096), (1651, 158312), (1778, 147004), (1799, 145288), (2002, 130556), (2056, 127127), (2794, 93548), (2827, 92456), (3302, 79156), (3341, 78232), (3556, 73502), (3598, 72644), (4004, 65278), (5588, 46774), (5654, 46228), (6604, 39578), (6682, 39116), (7112, 36751), (7196, 36322), (8008, 32639), (9779, 26728), (11176, 23387), (11308, 23114), (11557, 22616), (13208, 19789), (13364, 19558), (14392, 18161)]