128865884

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{167}}^1$

素因数の和:343

約数の個数: 72

約数和(自身を含む): 274563072

約数和(自身を除く): 145697188

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 62, 98, 124, 127, 167, 196, 217, 254, 334, 434, 508, 668, 868, 889, 1169, 1519, 1778, 2338, 3038, 3556, 3937, 4676, 5177, 6076, 6223, 7874, 8183, 10354, 12446, 15748, 16366, 20708, 21209, 24892, 27559, 32732, 36239, 42418, 55118, 72478, 84836, 110236, 144956, 148463, 192913, 253673, 296926, 385826, 507346, 593852, 657479, 771652, 1014692, 1039241, 1314958, 2078482, 2629916, 4156964, 4602353, 9204706, 18409412, 32216471, 64432942, 128865884]

約数ペア:

[(1, 128865884), (2, 64432942), (4, 32216471), (7, 18409412), (14, 9204706), (28, 4602353), (31, 4156964), (49, 2629916), (62, 2078482), (98, 1314958), (124, 1039241), (127, 1014692), (167, 771652), (196, 657479), (217, 593852), (254, 507346), (334, 385826), (434, 296926), (508, 253673), (668, 192913), (868, 148463), (889, 144956), (1169, 110236), (1519, 84836), (1778, 72478), (2338, 55118), (3038, 42418), (3556, 36239), (3937, 32732), (4676, 27559), (5177, 24892), (6076, 21209), (6223, 20708), (7874, 16366), (8183, 15748), (10354, 12446)]