126977920

素因数分解:

$2^7\times 5^1\times {\mathrm{199}}^1\times {\mathrm{997}}^1$

素因数の和:1215

約数の個数: 64

約数和(自身を含む): 305388000

約数和(自身を除く): 178410080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 199, 320, 398, 640, 796, 995, 997, 1592, 1990, 1994, 3184, 3980, 3988, 4985, 6368, 7960, 7976, 9970, 12736, 15920, 15952, 19940, 25472, 31840, 31904, 39880, 63680, 63808, 79760, 127360, 127616, 159520, 198403, 319040, 396806, 638080, 793612, 992015, 1587224, 1984030, 3174448, 3968060, 6348896, 7936120, 12697792, 15872240, 25395584, 31744480, 63488960, 126977920]

約数ペア:

[(1, 126977920), (2, 63488960), (4, 31744480), (5, 25395584), (8, 15872240), (10, 12697792), (16, 7936120), (20, 6348896), (32, 3968060), (40, 3174448), (64, 1984030), (80, 1587224), (128, 992015), (160, 793612), (199, 638080), (320, 396806), (398, 319040), (640, 198403), (796, 159520), (995, 127616), (997, 127360), (1592, 79760), (1990, 63808), (1994, 63680), (3184, 39880), (3980, 31904), (3988, 31840), (4985, 25472), (6368, 19940), (7960, 15952), (7976, 15920), (9970, 12736)]