About the Number

23781990

23781989 ← → 23781991

2進数表記:1011010101110001001100110

漢数字表記:二千三百七十八万千九百九十

素因数分解:

2 1 × 3 1 × 5 1 × 83 1 × 9551 1

素因数の和:9644
約数の個数: 32
約数和(自身を含む): 57770496
約数和(自身を除く): 33988506

約数列:
[1, 2, 3, 5, 6, 10, 15, 30, 83, 166, 249, 415, 498, 830, 1245, 2490, 9551, 19102, 28653, 47755, 57306, 95510, 143265, 286530, 792733, 1585466, 2378199, 3963665, 4756398, 7927330, 11890995, 23781990]

約数ペア:
[(1, 23781990), (2, 11890995), (3, 7927330), (5, 4756398), (6, 3963665), (10, 2378199), (15, 1585466), (30, 792733), (83, 286530), (166, 143265), (249, 95510), (415, 57306), (498, 47755), (830, 28653), (1245, 19102), (2490, 9551)]

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