About the Number

2021081921

2021081920 ← → 2021081922

2進数表記:1111000011101110100001101000001

漢数字表記:二十億二千百八万千九百二十一

素因数分解:

23 1 × 31 1 × 41 1 × 47 1 × 1471 1

素因数の和:1613
約数の個数: 32
約数和(自身を含む): 2279079936
約数和(自身を除く): 257998015

約数列:
[1, 23, 31, 41, 47, 713, 943, 1081, 1271, 1457, 1471, 1927, 29233, 33511, 33833, 44321, 45601, 59737, 60311, 69137, 1048823, 1373951, 1387153, 1590151, 1869641, 2143247, 2834617, 43001743, 49294681, 65196191, 87873127, 2021081921]

約数ペア:
[(1, 2021081921), (23, 87873127), (31, 65196191), (41, 49294681), (47, 43001743), (713, 2834617), (943, 2143247), (1081, 1869641), (1271, 1590151), (1457, 1387153), (1471, 1373951), (1927, 1048823), (29233, 69137), (33511, 60311), (33833, 59737), (44321, 45601)]

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