21177960040

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{977}}^1\times {\mathrm{3637}}^1$

素因数の和:4774

約数の個数: 64

約数和(自身を含む): 48032514000

約数和(自身を除く): 26854553960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 977, 1192, 1490, 1954, 2980, 3637, 3908, 4885, 5960, 7274, 7816, 9770, 14548, 18185, 19540, 29096, 36370, 39080, 72740, 145480, 145573, 291146, 541913, 582292, 727865, 1083826, 1164584, 1455730, 2167652, 2709565, 2911460, 3553349, 4335304, 5419130, 5822920, 7106698, 10838260, 14213396, 17766745, 21676520, 28426792, 35533490, 71066980, 142133960, 529449001, 1058898002, 2117796004, 2647245005, 4235592008, 5294490010, 10588980020, 21177960040]

約数ペア:

[(1, 21177960040), (2, 10588980020), (4, 5294490010), (5, 4235592008), (8, 2647245005), (10, 2117796004), (20, 1058898002), (40, 529449001), (149, 142133960), (298, 71066980), (596, 35533490), (745, 28426792), (977, 21676520), (1192, 17766745), (1490, 14213396), (1954, 10838260), (2980, 7106698), (3637, 5822920), (3908, 5419130), (4885, 4335304), (5960, 3553349), (7274, 2911460), (7816, 2709565), (9770, 2167652), (14548, 1455730), (18185, 1164584), (19540, 1083826), (29096, 727865), (36370, 582292), (39080, 541913), (72740, 291146), (145480, 145573)]