About the Number

25551990

25551989 ← → 25551991

2進数表記:1100001011110010001110110

漢数字表記:二千五百五十五万千九百九十

素因数分解:

2 1 × 3 3 × 5 1 × 101 1 × 937 1

素因数の和:1054
約数の個数: 64
約数和(自身を含む): 68886720
約数和(自身を除く): 43334730

約数列:
[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 101, 135, 202, 270, 303, 505, 606, 909, 937, 1010, 1515, 1818, 1874, 2727, 2811, 3030, 4545, 4685, 5454, 5622, 8433, 9090, 9370, 13635, 14055, 16866, 25299, 27270, 28110, 42165, 50598, 84330, 94637, 126495, 189274, 252990, 283911, 473185, 567822, 851733, 946370, 1419555, 1703466, 2555199, 2839110, 4258665, 5110398, 8517330, 12775995, 25551990]

約数ペア:
[(1, 25551990), (2, 12775995), (3, 8517330), (5, 5110398), (6, 4258665), (9, 2839110), (10, 2555199), (15, 1703466), (18, 1419555), (27, 946370), (30, 851733), (45, 567822), (54, 473185), (90, 283911), (101, 252990), (135, 189274), (202, 126495), (270, 94637), (303, 84330), (505, 50598), (606, 42165), (909, 28110), (937, 27270), (1010, 25299), (1515, 16866), (1818, 14055), (1874, 13635), (2727, 9370), (2811, 9090), (3030, 8433), (4545, 5622), (4685, 5454)]

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