20461071250

素因数分解:

$2^1\times 5^4\times {\mathrm{109}}^1\times {\mathrm{263}}^1\times {\mathrm{571}}^1$

素因数の和:965

約数の個数: 80

約数和(自身を含む): 38919291840

約数和(自身を除く): 18458220590

約数列:

[1, 2, 5, 10, 25, 50, 109, 125, 218, 250, 263, 526, 545, 571, 625, 1090, 1142, 1250, 1315, 2630, 2725, 2855, 5450, 5710, 6575, 13150, 13625, 14275, 27250, 28550, 28667, 32875, 57334, 62239, 65750, 68125, 71375, 124478, 136250, 142750, 143335, 150173, 164375, 286670, 300346, 311195, 328750, 356875, 622390, 713750, 716675, 750865, 1433350, 1501730, 1555975, 3111950, 3583375, 3754325, 7166750, 7508650, 7779875, 15559750, 16368857, 17916875, 18771625, 32737714, 35833750, 37543250, 38899375, 77798750, 81844285, 93858125, 163688570, 187716250, 409221425, 818442850, 2046107125, 4092214250, 10230535625, 20461071250]

約数ペア:

[(1, 20461071250), (2, 10230535625), (5, 4092214250), (10, 2046107125), (25, 818442850), (50, 409221425), (109, 187716250), (125, 163688570), (218, 93858125), (250, 81844285), (263, 77798750), (526, 38899375), (545, 37543250), (571, 35833750), (625, 32737714), (1090, 18771625), (1142, 17916875), (1250, 16368857), (1315, 15559750), (2630, 7779875), (2725, 7508650), (2855, 7166750), (5450, 3754325), (5710, 3583375), (6575, 3111950), (13150, 1555975), (13625, 1501730), (14275, 1433350), (27250, 750865), (28550, 716675), (28667, 713750), (32875, 622390), (57334, 356875), (62239, 328750), (65750, 311195), (68125, 300346), (71375, 286670), (124478, 164375), (136250, 150173), (142750, 143335)]