About the Number

81669730

81669729 ← → 81669731

2進数表記:100110111100010111001100010

漢数字表記:八千百六十六万九千七百三十

素因数分解:

2 1 × 5 1 × 37 1 × 103 1 × 2143 1

素因数の和:2290
約数の個数: 32
約数和(自身を含む): 152515584
約数和(自身を除く): 70845854

約数列:
[1, 2, 5, 10, 37, 74, 103, 185, 206, 370, 515, 1030, 2143, 3811, 4286, 7622, 10715, 19055, 21430, 38110, 79291, 158582, 220729, 396455, 441458, 792910, 1103645, 2207290, 8166973, 16333946, 40834865, 81669730]

約数ペア:
[(1, 81669730), (2, 40834865), (5, 16333946), (10, 8166973), (37, 2207290), (74, 1103645), (103, 792910), (185, 441458), (206, 396455), (370, 220729), (515, 158582), (1030, 79291), (2143, 38110), (3811, 21430), (4286, 19055), (7622, 10715)]

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