About the Number

489890640

489890639 ← → 489890641

2進数表記:11101001100110010001101010000

漢数字表記:四億八千九百八十九万六百四十

素因数分解:

2 4 × 3 1 × 5 1 × 709 1 × 2879 1

素因数の和:3604
約数の個数: 80
約数和(自身を含む): 1521331200
約数和(自身を除く): 1031440560

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 709, 1418, 2127, 2836, 2879, 3545, 4254, 5672, 5758, 7090, 8508, 8637, 10635, 11344, 11516, 14180, 14395, 17016, 17274, 21270, 23032, 28360, 28790, 34032, 34548, 42540, 43185, 46064, 56720, 57580, 69096, 85080, 86370, 115160, 138192, 170160, 172740, 230320, 345480, 690960, 2041211, 4082422, 6123633, 8164844, 10206055, 12247266, 16329688, 20412110, 24494532, 30618165, 32659376, 40824220, 48989064, 61236330, 81648440, 97978128, 122472660, 163296880, 244945320, 489890640]

約数ペア:
[(1, 489890640), (2, 244945320), (3, 163296880), (4, 122472660), (5, 97978128), (6, 81648440), (8, 61236330), (10, 48989064), (12, 40824220), (15, 32659376), (16, 30618165), (20, 24494532), (24, 20412110), (30, 16329688), (40, 12247266), (48, 10206055), (60, 8164844), (80, 6123633), (120, 4082422), (240, 2041211), (709, 690960), (1418, 345480), (2127, 230320), (2836, 172740), (2879, 170160), (3545, 138192), (4254, 115160), (5672, 86370), (5758, 85080), (7090, 69096), (8508, 57580), (8637, 56720), (10635, 46064), (11344, 43185), (11516, 42540), (14180, 34548), (14395, 34032), (17016, 28790), (17274, 28360), (21270, 23032)]

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