251565496

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:285

約数の個数: 128

約数和(自身を含む): 611573760

約数和(自身を除く): 360008264

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 31, 52, 56, 62, 71, 91, 104, 124, 142, 157, 182, 217, 248, 284, 314, 364, 403, 434, 497, 568, 628, 728, 806, 868, 923, 994, 1099, 1256, 1612, 1736, 1846, 1988, 2041, 2198, 2201, 2821, 3224, 3692, 3976, 4082, 4396, 4402, 4867, 5642, 6461, 7384, 8164, 8792, 8804, 9734, 11147, 11284, 12922, 14287, 15407, 16328, 17608, 19468, 22294, 22568, 25844, 28574, 28613, 30814, 34069, 38936, 44588, 51688, 57148, 57226, 61628, 63271, 68138, 78029, 89176, 114296, 114452, 123256, 126542, 136276, 144911, 156058, 200291, 228904, 253084, 272552, 289822, 312116, 345557, 400582, 442897, 506168, 579644, 624232, 691114, 801164, 885794, 1014377, 1159288, 1382228, 1602328, 1771588, 2028754, 2418899, 2764456, 3543176, 4057508, 4492241, 4837798, 8115016, 8984482, 9675596, 17968964, 19351192, 31445687, 35937928, 62891374, 125782748, 251565496]

約数ペア:

[(1, 251565496), (2, 125782748), (4, 62891374), (7, 35937928), (8, 31445687), (13, 19351192), (14, 17968964), (26, 9675596), (28, 8984482), (31, 8115016), (52, 4837798), (56, 4492241), (62, 4057508), (71, 3543176), (91, 2764456), (104, 2418899), (124, 2028754), (142, 1771588), (157, 1602328), (182, 1382228), (217, 1159288), (248, 1014377), (284, 885794), (314, 801164), (364, 691114), (403, 624232), (434, 579644), (497, 506168), (568, 442897), (628, 400582), (728, 345557), (806, 312116), (868, 289822), (923, 272552), (994, 253084), (1099, 228904), (1256, 200291), (1612, 156058), (1736, 144911), (1846, 136276), (1988, 126542), (2041, 123256), (2198, 114452), (2201, 114296), (2821, 89176), (3224, 78029), (3692, 68138), (3976, 63271), (4082, 61628), (4396, 57226), (4402, 57148), (4867, 51688), (5642, 44588), (6461, 38936), (7384, 34069), (8164, 30814), (8792, 28613), (8804, 28574), (9734, 25844), (11147, 22568), (11284, 22294), (12922, 19468), (14287, 17608), (15407, 16328)]