About the Number

200012980

200012979 ← → 200012981

2進数表記:1011111010111111010010110100

漢数字表記:二億一万二千九百八十

素因数分解:

2 2 × 5 1 × 1931 1 × 5179 1

素因数の和:7119
約数の個数: 24
約数和(自身を含む): 420325920
約数和(自身を除く): 220312940

約数列:
[1, 2, 4, 5, 10, 20, 1931, 3862, 5179, 7724, 9655, 10358, 19310, 20716, 25895, 38620, 51790, 103580, 10000649, 20001298, 40002596, 50003245, 100006490, 200012980]

約数ペア:
[(1, 200012980), (2, 100006490), (4, 50003245), (5, 40002596), (10, 20001298), (20, 10000649), (1931, 103580), (3862, 51790), (5179, 38620), (7724, 25895), (9655, 20716), (10358, 19310)]

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