About the Number

129331220

129331219 ← → 129331221

2進数表記:111101101010111000000010100

漢数字表記:一億二千九百三十三万千二百二十

素因数分解:

2 2 × 5 1 × 41 1 × 157721 1

素因数の和:157771
約数の個数: 24
約数和(自身を含む): 278221608
約数和(自身を除く): 148890388

約数列:
[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 157721, 315442, 630884, 788605, 1577210, 3154420, 6466561, 12933122, 25866244, 32332805, 64665610, 129331220]

約数ペア:
[(1, 129331220), (2, 64665610), (4, 32332805), (5, 25866244), (10, 12933122), (20, 6466561), (41, 3154420), (82, 1577210), (164, 788605), (205, 630884), (410, 315442), (820, 157721)]

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