About the Number

939728640

939728639 ← → 939728641

2進数表記:111000000000110001111100000000

漢数字表記:九億三千九百七十二万八千六百四十

素因数分解:

2 8 × 3 1 × 5 1 × 244721 1

素因数の和:244745
約数の個数: 72
約数和(自身を含む): 3001270608
約数和(自身を除く): 2061541968

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 640, 768, 960, 1280, 1920, 3840, 244721, 489442, 734163, 978884, 1223605, 1468326, 1957768, 2447210, 2936652, 3670815, 3915536, 4894420, 5873304, 7341630, 7831072, 9788840, 11746608, 14683260, 15662144, 19577680, 23493216, 29366520, 31324288, 39155360, 46986432, 58733040, 62648576, 78310720, 93972864, 117466080, 156621440, 187945728, 234932160, 313242880, 469864320, 939728640]

約数ペア:
[(1, 939728640), (2, 469864320), (3, 313242880), (4, 234932160), (5, 187945728), (6, 156621440), (8, 117466080), (10, 93972864), (12, 78310720), (15, 62648576), (16, 58733040), (20, 46986432), (24, 39155360), (30, 31324288), (32, 29366520), (40, 23493216), (48, 19577680), (60, 15662144), (64, 14683260), (80, 11746608), (96, 9788840), (120, 7831072), (128, 7341630), (160, 5873304), (192, 4894420), (240, 3915536), (256, 3670815), (320, 2936652), (384, 2447210), (480, 1957768), (640, 1468326), (768, 1223605), (960, 978884), (1280, 734163), (1920, 489442), (3840, 244721)]

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