About the Number

201661005

201661004 ← → 201661006

2進数表記:1100000001010001101001001101

漢数字表記:二億百六十六万千五

素因数分解:

3 1 × 5 1 × 7 1 × 13 1 × 157 1 × 941 1

素因数の和:1126
約数の個数: 64
約数和(自身を含む): 400071168
約数和(自身を除く): 198410163

約数列:
[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 157, 195, 273, 455, 471, 785, 941, 1099, 1365, 2041, 2355, 2823, 3297, 4705, 5495, 6123, 6587, 10205, 12233, 14115, 14287, 16485, 19761, 30615, 32935, 36699, 42861, 61165, 71435, 85631, 98805, 147737, 183495, 214305, 256893, 428155, 443211, 738685, 1034159, 1284465, 1920581, 2216055, 3102477, 5170795, 5761743, 9602905, 13444067, 15512385, 28808715, 40332201, 67220335, 201661005]

約数ペア:
[(1, 201661005), (3, 67220335), (5, 40332201), (7, 28808715), (13, 15512385), (15, 13444067), (21, 9602905), (35, 5761743), (39, 5170795), (65, 3102477), (91, 2216055), (105, 1920581), (157, 1284465), (195, 1034159), (273, 738685), (455, 443211), (471, 428155), (785, 256893), (941, 214305), (1099, 183495), (1365, 147737), (2041, 98805), (2355, 85631), (2823, 71435), (3297, 61165), (4705, 42861), (5495, 36699), (6123, 32935), (6587, 30615), (10205, 19761), (12233, 16485), (14115, 14287)]

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