258795740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1$

素因数の和:387

約数の個数: 96

約数和(自身を含む): 636539904

約数和(自身を除く): 377744164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 103, 131, 137, 140, 206, 262, 274, 412, 515, 524, 548, 655, 685, 721, 917, 959, 1030, 1310, 1370, 1442, 1834, 1918, 2060, 2620, 2740, 2884, 3605, 3668, 3836, 4585, 4795, 7210, 9170, 9590, 13493, 14111, 14420, 17947, 18340, 19180, 26986, 28222, 35894, 53972, 56444, 67465, 70555, 71788, 89735, 94451, 98777, 125629, 134930, 141110, 179470, 188902, 197554, 251258, 269860, 282220, 358940, 377804, 395108, 472255, 493885, 502516, 628145, 944510, 987770, 1256290, 1848541, 1889020, 1975540, 2512580, 3697082, 7394164, 9242705, 12939787, 18485410, 25879574, 36970820, 51759148, 64698935, 129397870, 258795740]

約数ペア:

[(1, 258795740), (2, 129397870), (4, 64698935), (5, 51759148), (7, 36970820), (10, 25879574), (14, 18485410), (20, 12939787), (28, 9242705), (35, 7394164), (70, 3697082), (103, 2512580), (131, 1975540), (137, 1889020), (140, 1848541), (206, 1256290), (262, 987770), (274, 944510), (412, 628145), (515, 502516), (524, 493885), (548, 472255), (655, 395108), (685, 377804), (721, 358940), (917, 282220), (959, 269860), (1030, 251258), (1310, 197554), (1370, 188902), (1442, 179470), (1834, 141110), (1918, 134930), (2060, 125629), (2620, 98777), (2740, 94451), (2884, 89735), (3605, 71788), (3668, 70555), (3836, 67465), (4585, 56444), (4795, 53972), (7210, 35894), (9170, 28222), (9590, 26986), (13493, 19180), (14111, 18340), (14420, 17947)]