128870456

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{887}}^1$

素因数の和:1044

約数の個数: 64

約数和(自身を含む): 286433280

約数和(自身を除く): 157562824

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 127, 143, 254, 286, 508, 572, 887, 1016, 1144, 1397, 1651, 1774, 2794, 3302, 3548, 5588, 6604, 7096, 9757, 11176, 11531, 13208, 18161, 19514, 23062, 36322, 39028, 46124, 72644, 78056, 92248, 112649, 126841, 145288, 225298, 253682, 450596, 507364, 901192, 1014728, 1239139, 1464437, 2478278, 2928874, 4956556, 5857748, 9913112, 11715496, 16108807, 32217614, 64435228, 128870456]

約数ペア:

[(1, 128870456), (2, 64435228), (4, 32217614), (8, 16108807), (11, 11715496), (13, 9913112), (22, 5857748), (26, 4956556), (44, 2928874), (52, 2478278), (88, 1464437), (104, 1239139), (127, 1014728), (143, 901192), (254, 507364), (286, 450596), (508, 253682), (572, 225298), (887, 145288), (1016, 126841), (1144, 112649), (1397, 92248), (1651, 78056), (1774, 72644), (2794, 46124), (3302, 39028), (3548, 36322), (5588, 23062), (6604, 19514), (7096, 18161), (9757, 13208), (11176, 11531)]