1280133820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{1306259}}^1$

素因数の和:1306282

約数の個数: 36

約数和(自身を含む): 3127186440

約数和(自身を除く): 1847052620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 1306259, 2612518, 5225036, 6531295, 9143813, 13062590, 18287626, 26125180, 36575252, 45719065, 64006691, 91438130, 128013382, 182876260, 256026764, 320033455, 640066910, 1280133820]

約数ペア:

[(1, 1280133820), (2, 640066910), (4, 320033455), (5, 256026764), (7, 182876260), (10, 128013382), (14, 91438130), (20, 64006691), (28, 45719065), (35, 36575252), (49, 26125180), (70, 18287626), (98, 13062590), (140, 9143813), (196, 6531295), (245, 5225036), (490, 2612518), (980, 1306259)]