199984640

素因数分解:

$2^9\times 5^1\times {\mathrm{191}}^1\times {\mathrm{409}}^1$

素因数の和:623

約数の個数: 80

約数和(自身を含む): 483183360

約数和(自身を除く): 283198720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 191, 256, 320, 382, 409, 512, 640, 764, 818, 955, 1280, 1528, 1636, 1910, 2045, 2560, 3056, 3272, 3820, 4090, 6112, 6544, 7640, 8180, 12224, 13088, 15280, 16360, 24448, 26176, 30560, 32720, 48896, 52352, 61120, 65440, 78119, 97792, 104704, 122240, 130880, 156238, 209408, 244480, 261760, 312476, 390595, 488960, 523520, 624952, 781190, 1047040, 1249904, 1562380, 2499808, 3124760, 4999616, 6249520, 9999232, 12499040, 19998464, 24998080, 39996928, 49996160, 99992320, 199984640]

約数ペア:

[(1, 199984640), (2, 99992320), (4, 49996160), (5, 39996928), (8, 24998080), (10, 19998464), (16, 12499040), (20, 9999232), (32, 6249520), (40, 4999616), (64, 3124760), (80, 2499808), (128, 1562380), (160, 1249904), (191, 1047040), (256, 781190), (320, 624952), (382, 523520), (409, 488960), (512, 390595), (640, 312476), (764, 261760), (818, 244480), (955, 209408), (1280, 156238), (1528, 130880), (1636, 122240), (1910, 104704), (2045, 97792), (2560, 78119), (3056, 65440), (3272, 61120), (3820, 52352), (4090, 48896), (6112, 32720), (6544, 30560), (7640, 26176), (8180, 24448), (12224, 16360), (13088, 15280)]