About the Number

18090990

18090989 ← → 18090991

2進数表記:1000101000000101111101110

漢数字表記:千八百九万九百九十

素因数分解:

2 1 × 3 2 × 5 1 × 201011 1

素因数の和:201024
約数の個数: 24
約数和(自身を含む): 47036808
約数和(自身を除く): 28945818

約数列:
[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 201011, 402022, 603033, 1005055, 1206066, 1809099, 2010110, 3015165, 3618198, 6030330, 9045495, 18090990]

約数ペア:
[(1, 18090990), (2, 9045495), (3, 6030330), (5, 3618198), (6, 3015165), (9, 2010110), (10, 1809099), (15, 1206066), (18, 1005055), (30, 603033), (45, 402022), (90, 201011)]

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