About the Number

131228748

131228747 ← → 131228749

2進数表記:111110100100110010001001100

漢数字表記:一億三千百二十二万八千七百四十八

素因数分解:

2 2 × 3 7 × 7 1 × 2143 1

素因数の和:2175
約数の個数: 96
約数和(自身を含む): 393809920
約数和(自身を除く): 262581172

約数列:
[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 81, 84, 108, 126, 162, 189, 243, 252, 324, 378, 486, 567, 729, 756, 972, 1134, 1458, 1701, 2143, 2187, 2268, 2916, 3402, 4286, 4374, 5103, 6429, 6804, 8572, 8748, 10206, 12858, 15001, 15309, 19287, 20412, 25716, 30002, 30618, 38574, 45003, 57861, 60004, 61236, 77148, 90006, 115722, 135009, 173583, 180012, 231444, 270018, 347166, 405027, 520749, 540036, 694332, 810054, 1041498, 1215081, 1562247, 1620108, 2082996, 2430162, 3124494, 3645243, 4686741, 4860324, 6248988, 7290486, 9373482, 10935729, 14580972, 18746964, 21871458, 32807187, 43742916, 65614374, 131228748]

約数ペア:
[(1, 131228748), (2, 65614374), (3, 43742916), (4, 32807187), (6, 21871458), (7, 18746964), (9, 14580972), (12, 10935729), (14, 9373482), (18, 7290486), (21, 6248988), (27, 4860324), (28, 4686741), (36, 3645243), (42, 3124494), (54, 2430162), (63, 2082996), (81, 1620108), (84, 1562247), (108, 1215081), (126, 1041498), (162, 810054), (189, 694332), (243, 540036), (252, 520749), (324, 405027), (378, 347166), (486, 270018), (567, 231444), (729, 180012), (756, 173583), (972, 135009), (1134, 115722), (1458, 90006), (1701, 77148), (2143, 61236), (2187, 60004), (2268, 57861), (2916, 45003), (3402, 38574), (4286, 30618), (4374, 30002), (5103, 25716), (6429, 20412), (6804, 19287), (8572, 15309), (8748, 15001), (10206, 12858)]

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