About the Number

81438384

81438383 ← → 81438385

2進数表記:100110110101010011010110000

漢数字表記:八千百四十三万八千三百八十四

素因数分解:

2 4 × 3 1 × 673 1 × 2521 1

素因数の和:3205
約数の個数: 40
約数和(自身を含む): 210778672
約数和(自身を除く): 129340288

約数列:
[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 673, 1346, 2019, 2521, 2692, 4038, 5042, 5384, 7563, 8076, 10084, 10768, 15126, 16152, 20168, 30252, 32304, 40336, 60504, 121008, 1696633, 3393266, 5089899, 6786532, 10179798, 13573064, 20359596, 27146128, 40719192, 81438384]

約数ペア:
[(1, 81438384), (2, 40719192), (3, 27146128), (4, 20359596), (6, 13573064), (8, 10179798), (12, 6786532), (16, 5089899), (24, 3393266), (48, 1696633), (673, 121008), (1346, 60504), (2019, 40336), (2521, 32304), (2692, 30252), (4038, 20168), (5042, 16152), (5384, 15126), (7563, 10768), (8076, 10084)]

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