About the Number

30831990

30831989 ← → 30831991

2進数表記:1110101100111010101110110

漢数字表記:三千八十三万千九百九十

素因数分解:

2 1 × 3 1 × 5 1 × 7 1 × 146819 1

素因数の和:146836
約数の個数: 32
約数和(自身を含む): 84568320
約数和(自身を除く): 53736330

約数列:
[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 146819, 293638, 440457, 734095, 880914, 1027733, 1468190, 2055466, 2202285, 3083199, 4404570, 5138665, 6166398, 10277330, 15415995, 30831990]

約数ペア:
[(1, 30831990), (2, 15415995), (3, 10277330), (5, 6166398), (6, 5138665), (7, 4404570), (10, 3083199), (14, 2202285), (15, 2055466), (21, 1468190), (30, 1027733), (35, 880914), (42, 734095), (70, 440457), (105, 293638), (210, 146819)]

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