About the Number

1285228728

1285228727 ← → 1285228729

2進数表記:1001100100110110000100010111000

漢数字表記:十二億八千五百二十二万八千七百二十八

素因数分解:

2 3 × 3 3 × 7 1 × 29 1 × 29311 1

素因数の和:29362
約数の個数: 128
約数和(自身を含む): 4220928000
約数和(自身を除く): 2935699272

約数列:
[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 29, 36, 42, 54, 56, 58, 63, 72, 84, 87, 108, 116, 126, 168, 174, 189, 203, 216, 232, 252, 261, 348, 378, 406, 504, 522, 609, 696, 756, 783, 812, 1044, 1218, 1512, 1566, 1624, 1827, 2088, 2436, 3132, 3654, 4872, 5481, 6264, 7308, 10962, 14616, 21924, 29311, 43848, 58622, 87933, 117244, 175866, 205177, 234488, 263799, 351732, 410354, 527598, 615531, 703464, 791397, 820708, 850019, 1055196, 1231062, 1582794, 1641416, 1700038, 1846593, 2110392, 2462124, 2550057, 3165588, 3400076, 3693186, 4924248, 5100114, 5539779, 5950133, 6331176, 6800152, 7386372, 7650171, 10200228, 11079558, 11900266, 14772744, 15300342, 17850399, 20400456, 22159116, 22950513, 23800532, 30600684, 35700798, 44318232, 45901026, 47601064, 53551197, 61201368, 71401596, 91802052, 107102394, 142803192, 160653591, 183604104, 214204788, 321307182, 428409576, 642614364, 1285228728]

約数ペア:
[(1, 1285228728), (2, 642614364), (3, 428409576), (4, 321307182), (6, 214204788), (7, 183604104), (8, 160653591), (9, 142803192), (12, 107102394), (14, 91802052), (18, 71401596), (21, 61201368), (24, 53551197), (27, 47601064), (28, 45901026), (29, 44318232), (36, 35700798), (42, 30600684), (54, 23800532), (56, 22950513), (58, 22159116), (63, 20400456), (72, 17850399), (84, 15300342), (87, 14772744), (108, 11900266), (116, 11079558), (126, 10200228), (168, 7650171), (174, 7386372), (189, 6800152), (203, 6331176), (216, 5950133), (232, 5539779), (252, 5100114), (261, 4924248), (348, 3693186), (378, 3400076), (406, 3165588), (504, 2550057), (522, 2462124), (609, 2110392), (696, 1846593), (756, 1700038), (783, 1641416), (812, 1582794), (1044, 1231062), (1218, 1055196), (1512, 850019), (1566, 820708), (1624, 791397), (1827, 703464), (2088, 615531), (2436, 527598), (3132, 410354), (3654, 351732), (4872, 263799), (5481, 234488), (6264, 205177), (7308, 175866), (10962, 117244), (14616, 87933), (21924, 58622), (29311, 43848)]

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