205184920

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{173}}^1\times {\mathrm{199}}^1$

素因数の和:532

約数の個数: 64

約数和(自身を含む): 469800000

約数和(自身を除く): 264615080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 173, 199, 298, 346, 398, 596, 692, 745, 796, 865, 995, 1192, 1384, 1490, 1592, 1730, 1990, 2980, 3460, 3980, 5960, 6920, 7960, 25777, 29651, 34427, 51554, 59302, 68854, 103108, 118604, 128885, 137708, 148255, 172135, 206216, 237208, 257770, 275416, 296510, 344270, 515540, 593020, 688540, 1031080, 1186040, 1377080, 5129623, 10259246, 20518492, 25648115, 41036984, 51296230, 102592460, 205184920]

約数ペア:

[(1, 205184920), (2, 102592460), (4, 51296230), (5, 41036984), (8, 25648115), (10, 20518492), (20, 10259246), (40, 5129623), (149, 1377080), (173, 1186040), (199, 1031080), (298, 688540), (346, 593020), (398, 515540), (596, 344270), (692, 296510), (745, 275416), (796, 257770), (865, 237208), (995, 206216), (1192, 172135), (1384, 148255), (1490, 137708), (1592, 128885), (1730, 118604), (1990, 103108), (2980, 68854), (3460, 59302), (3980, 51554), (5960, 34427), (6920, 29651), (7960, 25777)]