81510720

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{431}}^1$

素因数の和:648

約数の個数: 112

約数和(自身を含む): 260713728

約数和(自身を除く): 179203008

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, 160, 192, 197, 240, 320, 394, 431, 480, 591, 788, 862, 960, 985, 1182, 1293, 1576, 1724, 1970, 2155, 2364, 2586, 2955, 3152, 3448, 3940, 4310, 4728, 5172, 5910, 6304, 6465, 6896, 7880, 8620, 9456, 10344, 11820, 12608, 12930, 13792, 15760, 17240, 18912, 20688, 23640, 25860, 27584, 31520, 34480, 37824, 41376, 47280, 51720, 63040, 68960, 82752, 84907, 94560, 103440, 137920, 169814, 189120, 206880, 254721, 339628, 413760, 424535, 509442, 679256, 849070, 1018884, 1273605, 1358512, 1698140, 2037768, 2547210, 2717024, 3396280, 4075536, 5094420, 5434048, 6792560, 8151072, 10188840, 13585120, 16302144, 20377680, 27170240, 40755360, 81510720]

約数ペア:

[(1, 81510720), (2, 40755360), (3, 27170240), (4, 20377680), (5, 16302144), (6, 13585120), (8, 10188840), (10, 8151072), (12, 6792560), (15, 5434048), (16, 5094420), (20, 4075536), (24, 3396280), (30, 2717024), (32, 2547210), (40, 2037768), (48, 1698140), (60, 1358512), (64, 1273605), (80, 1018884), (96, 849070), (120, 679256), (160, 509442), (192, 424535), (197, 413760), (240, 339628), (320, 254721), (394, 206880), (431, 189120), (480, 169814), (591, 137920), (788, 103440), (862, 94560), (960, 84907), (985, 82752), (1182, 68960), (1293, 63040), (1576, 51720), (1724, 47280), (1970, 41376), (2155, 37824), (2364, 34480), (2586, 31520), (2955, 27584), (3152, 25860), (3448, 23640), (3940, 20688), (4310, 18912), (4728, 17240), (5172, 15760), (5910, 13792), (6304, 12930), (6465, 12608), (6896, 11820), (7880, 10344), (8620, 9456)]