21204291232

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{2081}}^1\times {\mathrm{16759}}^1$

素因数の和:18869

約数の個数: 48

約数和(自身を含む): 43966843200

約数和(自身を除く): 22762551968

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 152, 304, 608, 2081, 4162, 8324, 16648, 16759, 33296, 33518, 39539, 66592, 67036, 79078, 134072, 158156, 268144, 316312, 318421, 536288, 632624, 636842, 1265248, 1273684, 2547368, 5094736, 10189472, 34875479, 69750958, 139501916, 279003832, 558007664, 662634101, 1116015328, 1325268202, 2650536404, 5301072808, 10602145616, 21204291232]

約数ペア:

[(1, 21204291232), (2, 10602145616), (4, 5301072808), (8, 2650536404), (16, 1325268202), (19, 1116015328), (32, 662634101), (38, 558007664), (76, 279003832), (152, 139501916), (304, 69750958), (608, 34875479), (2081, 10189472), (4162, 5094736), (8324, 2547368), (16648, 1273684), (16759, 1265248), (33296, 636842), (33518, 632624), (39539, 536288), (66592, 318421), (67036, 316312), (79078, 268144), (134072, 158156)]