21940807520

素因数分解:

$2^5\times 5^1\times {\mathrm{1669}}^1\times {\mathrm{82163}}^1$

素因数の和:83847

約数の個数: 48

約数和(自身を含む): 51866846640

約数和(自身を除く): 29926039120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 1669, 3338, 6676, 8345, 13352, 16690, 26704, 33380, 53408, 66760, 82163, 133520, 164326, 267040, 328652, 410815, 657304, 821630, 1314608, 1643260, 2629216, 3286520, 6573040, 13146080, 137130047, 274260094, 548520188, 685650235, 1097040376, 1371300470, 2194080752, 2742600940, 4388161504, 5485201880, 10970403760, 21940807520]

約数ペア:

[(1, 21940807520), (2, 10970403760), (4, 5485201880), (5, 4388161504), (8, 2742600940), (10, 2194080752), (16, 1371300470), (20, 1097040376), (32, 685650235), (40, 548520188), (80, 274260094), (160, 137130047), (1669, 13146080), (3338, 6573040), (6676, 3286520), (8345, 2629216), (13352, 1643260), (16690, 1314608), (26704, 821630), (33380, 657304), (53408, 410815), (66760, 328652), (82163, 267040), (133520, 164326)]