81164720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11149}}^1$

素因数の和:11182

約数の個数: 80

約数和(自身を含む): 232276800

約数和(自身を除く): 151112080

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 3640, 7280, 11149, 22298, 44596, 55745, 78043, 89192, 111490, 144937, 156086, 178384, 222980, 289874, 312172, 390215, 445960, 579748, 624344, 724685, 780430, 891920, 1014559, 1159496, 1248688, 1449370, 1560860, 2029118, 2318992, 2898740, 3121720, 4058236, 5072795, 5797480, 6243440, 8116472, 10145590, 11594960, 16232944, 20291180, 40582360, 81164720]

約数ペア:

[(1, 81164720), (2, 40582360), (4, 20291180), (5, 16232944), (7, 11594960), (8, 10145590), (10, 8116472), (13, 6243440), (14, 5797480), (16, 5072795), (20, 4058236), (26, 3121720), (28, 2898740), (35, 2318992), (40, 2029118), (52, 1560860), (56, 1449370), (65, 1248688), (70, 1159496), (80, 1014559), (91, 891920), (104, 780430), (112, 724685), (130, 624344), (140, 579748), (182, 445960), (208, 390215), (260, 312172), (280, 289874), (364, 222980), (455, 178384), (520, 156086), (560, 144937), (728, 111490), (910, 89192), (1040, 78043), (1456, 55745), (1820, 44596), (3640, 22298), (7280, 11149)]