80751720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{383}}^1$

素因数の和:655

約数の個数: 128

約数和(自身を含む): 278691840

約数和(自身を除く): 197940120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 251, 280, 383, 420, 502, 753, 766, 840, 1004, 1149, 1255, 1506, 1532, 1757, 1915, 2008, 2298, 2510, 2681, 3012, 3064, 3514, 3765, 3830, 4596, 5020, 5271, 5362, 5745, 6024, 7028, 7530, 7660, 8043, 8785, 9192, 10040, 10542, 10724, 11490, 13405, 14056, 15060, 15320, 16086, 17570, 21084, 21448, 22980, 26355, 26810, 30120, 32172, 35140, 40215, 42168, 45960, 52710, 53620, 64344, 70280, 80430, 96133, 105420, 107240, 160860, 192266, 210840, 288399, 321720, 384532, 480665, 576798, 672931, 769064, 961330, 1153596, 1345862, 1441995, 1922660, 2018793, 2307192, 2691724, 2883990, 3364655, 3845320, 4037586, 5383448, 5767980, 6729310, 8075172, 10093965, 11535960, 13458620, 16150344, 20187930, 26917240, 40375860, 80751720]

約数ペア:

[(1, 80751720), (2, 40375860), (3, 26917240), (4, 20187930), (5, 16150344), (6, 13458620), (7, 11535960), (8, 10093965), (10, 8075172), (12, 6729310), (14, 5767980), (15, 5383448), (20, 4037586), (21, 3845320), (24, 3364655), (28, 2883990), (30, 2691724), (35, 2307192), (40, 2018793), (42, 1922660), (56, 1441995), (60, 1345862), (70, 1153596), (84, 961330), (105, 769064), (120, 672931), (140, 576798), (168, 480665), (210, 384532), (251, 321720), (280, 288399), (383, 210840), (420, 192266), (502, 160860), (753, 107240), (766, 105420), (840, 96133), (1004, 80430), (1149, 70280), (1255, 64344), (1506, 53620), (1532, 52710), (1757, 45960), (1915, 42168), (2008, 40215), (2298, 35140), (2510, 32172), (2681, 30120), (3012, 26810), (3064, 26355), (3514, 22980), (3765, 21448), (3830, 21084), (4596, 17570), (5020, 16086), (5271, 15320), (5362, 15060), (5745, 14056), (6024, 13405), (7028, 11490), (7530, 10724), (7660, 10542), (8043, 10040), (8785, 9192)]