About the Number

2491980

2491979 ← → 2491981

2進数表記:1001100000011001001100

漢数字表記:二百四十九万千九百八十

素因数分解:

2 2 × 3 1 × 5 1 × 41 1 × 1013 1

素因数の和:1066
約数の個数: 48
約数和(自身を含む): 7154784
約数和(自身を除く): 4662804

約数列:
[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 41, 60, 82, 123, 164, 205, 246, 410, 492, 615, 820, 1013, 1230, 2026, 2460, 3039, 4052, 5065, 6078, 10130, 12156, 15195, 20260, 30390, 41533, 60780, 83066, 124599, 166132, 207665, 249198, 415330, 498396, 622995, 830660, 1245990, 2491980]

約数ペア:
[(1, 2491980), (2, 1245990), (3, 830660), (4, 622995), (5, 498396), (6, 415330), (10, 249198), (12, 207665), (15, 166132), (20, 124599), (30, 83066), (41, 60780), (60, 41533), (82, 30390), (123, 20260), (164, 15195), (205, 12156), (246, 10130), (410, 6078), (492, 5065), (615, 4052), (820, 3039), (1013, 2460), (1230, 2026)]

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