81707520

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{10639}}^1$

素因数の和:10665

約数の個数: 80

約数和(自身を含む): 261233280

約数和(自身を除く): 179525760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 512, 640, 768, 960, 1280, 1536, 1920, 2560, 3840, 7680, 10639, 21278, 31917, 42556, 53195, 63834, 85112, 106390, 127668, 159585, 170224, 212780, 255336, 319170, 340448, 425560, 510672, 638340, 680896, 851120, 1021344, 1276680, 1361792, 1702240, 2042688, 2553360, 2723584, 3404480, 4085376, 5106720, 5447168, 6808960, 8170752, 10213440, 13617920, 16341504, 20426880, 27235840, 40853760, 81707520]

約数ペア:

[(1, 81707520), (2, 40853760), (3, 27235840), (4, 20426880), (5, 16341504), (6, 13617920), (8, 10213440), (10, 8170752), (12, 6808960), (15, 5447168), (16, 5106720), (20, 4085376), (24, 3404480), (30, 2723584), (32, 2553360), (40, 2042688), (48, 1702240), (60, 1361792), (64, 1276680), (80, 1021344), (96, 851120), (120, 680896), (128, 638340), (160, 510672), (192, 425560), (240, 340448), (256, 319170), (320, 255336), (384, 212780), (480, 170224), (512, 159585), (640, 127668), (768, 106390), (960, 85112), (1280, 63834), (1536, 53195), (1920, 42556), (2560, 31917), (3840, 21278), (7680, 10639)]