About the Number

131539840

131539839 ← → 131539841

2進数表記:111110101110010001110000000

漢数字表記:一億三千百五十三万九千八百四十

素因数分解:

2 7 × 5 1 × 47 1 × 4373 1

素因数の和:4439
約数の個数: 64
約数和(自身を含む): 321226560
約数和(自身を除く): 189686720

約数列:
[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 128, 160, 188, 235, 320, 376, 470, 640, 752, 940, 1504, 1880, 3008, 3760, 4373, 6016, 7520, 8746, 15040, 17492, 21865, 30080, 34984, 43730, 69968, 87460, 139936, 174920, 205531, 279872, 349840, 411062, 559744, 699680, 822124, 1027655, 1399360, 1644248, 2055310, 2798720, 3288496, 4110620, 6576992, 8221240, 13153984, 16442480, 26307968, 32884960, 65769920, 131539840]

約数ペア:
[(1, 131539840), (2, 65769920), (4, 32884960), (5, 26307968), (8, 16442480), (10, 13153984), (16, 8221240), (20, 6576992), (32, 4110620), (40, 3288496), (47, 2798720), (64, 2055310), (80, 1644248), (94, 1399360), (128, 1027655), (160, 822124), (188, 699680), (235, 559744), (320, 411062), (376, 349840), (470, 279872), (640, 205531), (752, 174920), (940, 139936), (1504, 87460), (1880, 69968), (3008, 43730), (3760, 34984), (4373, 30080), (6016, 21865), (7520, 17492), (8746, 15040)]

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