About the Number

2800020

2800019 ← → 2800021

2進数表記:1010101011100110010100

漢数字表記:二百八十万二十

素因数分解:

2 2 × 3 1 × 5 1 × 23 1 × 2029 1

素因数の和:2064
約数の個数: 48
約数和(自身を含む): 8184960
約数和(自身を除く): 5384940

約数列:
[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 2029, 4058, 6087, 8116, 10145, 12174, 20290, 24348, 30435, 40580, 46667, 60870, 93334, 121740, 140001, 186668, 233335, 280002, 466670, 560004, 700005, 933340, 1400010, 2800020]

約数ペア:
[(1, 2800020), (2, 1400010), (3, 933340), (4, 700005), (5, 560004), (6, 466670), (10, 280002), (12, 233335), (15, 186668), (20, 140001), (23, 121740), (30, 93334), (46, 60870), (60, 46667), (69, 40580), (92, 30435), (115, 24348), (138, 20290), (230, 12174), (276, 10145), (345, 8116), (460, 6087), (690, 4058), (1380, 2029)]

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