269828080

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{997}}^1$

素因数の和:1226

約数の個数: 80

約数和(自身を含む): 668260800

約数和(自身を除く): 398432720

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 199, 272, 340, 398, 680, 796, 995, 997, 1360, 1592, 1990, 1994, 3184, 3383, 3980, 3988, 4985, 6766, 7960, 7976, 9970, 13532, 15920, 15952, 16915, 16949, 19940, 27064, 33830, 33898, 39880, 54128, 67660, 67796, 79760, 84745, 135320, 135592, 169490, 198403, 270640, 271184, 338980, 396806, 677960, 793612, 992015, 1355920, 1587224, 1984030, 3174448, 3372851, 3968060, 6745702, 7936120, 13491404, 15872240, 16864255, 26982808, 33728510, 53965616, 67457020, 134914040, 269828080]

約数ペア:

[(1, 269828080), (2, 134914040), (4, 67457020), (5, 53965616), (8, 33728510), (10, 26982808), (16, 16864255), (17, 15872240), (20, 13491404), (34, 7936120), (40, 6745702), (68, 3968060), (80, 3372851), (85, 3174448), (136, 1984030), (170, 1587224), (199, 1355920), (272, 992015), (340, 793612), (398, 677960), (680, 396806), (796, 338980), (995, 271184), (997, 270640), (1360, 198403), (1592, 169490), (1990, 135592), (1994, 135320), (3184, 84745), (3383, 79760), (3980, 67796), (3988, 67660), (4985, 54128), (6766, 39880), (7960, 33898), (7976, 33830), (9970, 27064), (13532, 19940), (15920, 16949), (15952, 16915)]