281503120

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{127}}^1\times {\mathrm{269}}^1$

素因数の和:512

約数の個数: 80

約数和(自身を含む): 668528640

約数和(自身を除く): 387025520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 127, 206, 254, 269, 412, 508, 515, 538, 635, 824, 1016, 1030, 1076, 1270, 1345, 1648, 2032, 2060, 2152, 2540, 2690, 4120, 4304, 5080, 5380, 8240, 10160, 10760, 13081, 21520, 26162, 27707, 34163, 52324, 55414, 65405, 68326, 104648, 110828, 130810, 136652, 138535, 170815, 209296, 221656, 261620, 273304, 277070, 341630, 443312, 523240, 546608, 554140, 683260, 1046480, 1108280, 1366520, 2216560, 2733040, 3518789, 7037578, 14075156, 17593945, 28150312, 35187890, 56300624, 70375780, 140751560, 281503120]

約数ペア:

[(1, 281503120), (2, 140751560), (4, 70375780), (5, 56300624), (8, 35187890), (10, 28150312), (16, 17593945), (20, 14075156), (40, 7037578), (80, 3518789), (103, 2733040), (127, 2216560), (206, 1366520), (254, 1108280), (269, 1046480), (412, 683260), (508, 554140), (515, 546608), (538, 523240), (635, 443312), (824, 341630), (1016, 277070), (1030, 273304), (1076, 261620), (1270, 221656), (1345, 209296), (1648, 170815), (2032, 138535), (2060, 136652), (2152, 130810), (2540, 110828), (2690, 104648), (4120, 68326), (4304, 65405), (5080, 55414), (5380, 52324), (8240, 34163), (10160, 27707), (10760, 26162), (13081, 21520)]