About the Number

19981420

19981419 ← → 19981421

2進数表記:1001100001110010001101100

漢数字表記:千九百九十八万千四百二十

素因数分解:

2 2 × 5 1 × 83 1 × 12037 1

素因数の和:12129
約数の個数: 24
約数和(自身を含む): 42470064
約数和(自身を除く): 22488644

約数列:
[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 12037, 24074, 48148, 60185, 120370, 240740, 999071, 1998142, 3996284, 4995355, 9990710, 19981420]

約数ペア:
[(1, 19981420), (2, 9990710), (4, 4995355), (5, 3996284), (10, 1998142), (20, 999071), (83, 240740), (166, 120370), (332, 60185), (415, 48148), (830, 24074), (1660, 12037)]

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