About the Number

1215632640

1215632639 ← → 1215632641

2進数表記:1001000011101010001010100000000

漢数字表記:十二億千五百六十三万二千六百四十

素因数分解:

2 8 × 3 1 × 5 1 × 316571 1

素因数の和:316595
約数の個数: 72
約数和(自身を含む): 3882439008
約数和(自身を除く): 2666806368

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, 316571, 633142, 949713, 1266284, 1582855, 1899426, 2532568, 3165710, 3798852, 4748565, 5065136, 6331420, 7597704, 9497130, 10130272, 12662840, 15195408, 18994260, 20260544, 25325680, 30390816, 37988520, 40521088, 50651360, 60781632, 75977040, 81042176, 101302720, 121563264, 151954080, 202605440, 243126528, 303908160, 405210880, 607816320, 1215632640]

約数ペア:
[(1, 1215632640), (2, 607816320), (3, 405210880), (4, 303908160), (5, 243126528), (6, 202605440), (8, 151954080), (10, 121563264), (12, 101302720), (15, 81042176), (16, 75977040), (20, 60781632), (24, 50651360), (30, 40521088), (32, 37988520), (40, 30390816), (48, 25325680), (60, 20260544), (64, 18994260), (80, 15195408), (96, 12662840), (120, 10130272), (128, 9497130), (160, 7597704), (192, 6331420), (240, 5065136), (256, 4748565), (320, 3798852), (384, 3165710), (480, 2532568), (640, 1899426), (768, 1582855), (960, 1266284), (1280, 949713), (1920, 633142), (3840, 316571)]

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