278566372

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:214

約数の個数: 108

約数和(自身を含む): 622669824

約数和(自身を除く): 344103452

約数列:

[1, 2, 4, 7, 14, 19, 28, 31, 38, 49, 62, 76, 98, 124, 127, 133, 196, 217, 254, 266, 361, 434, 508, 532, 589, 722, 868, 889, 931, 1178, 1444, 1519, 1778, 1862, 2356, 2413, 2527, 3038, 3556, 3724, 3937, 4123, 4826, 5054, 6076, 6223, 7874, 8246, 9652, 10108, 11191, 12446, 15748, 16492, 16891, 17689, 22382, 24892, 27559, 28861, 33782, 35378, 44764, 45847, 55118, 57722, 67564, 70756, 74803, 78337, 91694, 110236, 115444, 118237, 149606, 156674, 183388, 192913, 236474, 299212, 313348, 320929, 385826, 472948, 523621, 548359, 641858, 771652, 1047242, 1096718, 1283716, 1421257, 2094484, 2193436, 2246503, 2842514, 3665347, 4493006, 5685028, 7330694, 8986012, 9948799, 14661388, 19897598, 39795196, 69641593, 139283186, 278566372]

約数ペア:

[(1, 278566372), (2, 139283186), (4, 69641593), (7, 39795196), (14, 19897598), (19, 14661388), (28, 9948799), (31, 8986012), (38, 7330694), (49, 5685028), (62, 4493006), (76, 3665347), (98, 2842514), (124, 2246503), (127, 2193436), (133, 2094484), (196, 1421257), (217, 1283716), (254, 1096718), (266, 1047242), (361, 771652), (434, 641858), (508, 548359), (532, 523621), (589, 472948), (722, 385826), (868, 320929), (889, 313348), (931, 299212), (1178, 236474), (1444, 192913), (1519, 183388), (1778, 156674), (1862, 149606), (2356, 118237), (2413, 115444), (2527, 110236), (3038, 91694), (3556, 78337), (3724, 74803), (3937, 70756), (4123, 67564), (4826, 57722), (5054, 55118), (6076, 45847), (6223, 44764), (7874, 35378), (8246, 33782), (9652, 28861), (10108, 27559), (11191, 24892), (12446, 22382), (15748, 17689), (16492, 16891)]