About the Number

28807840

28807839 ← → 28807841

2進数表記:1101101111001001010100000

漢数字表記:二千八百八十万七千八百四十

素因数分解:

2 5 × 5 1 × 401 1 × 449 1

素因数の和:865
約数の個数: 48
約数和(自身を含む): 68380200
約数和(自身を除く): 39572360

約数列:
[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 401, 449, 802, 898, 1604, 1796, 2005, 2245, 3208, 3592, 4010, 4490, 6416, 7184, 8020, 8980, 12832, 14368, 16040, 17960, 32080, 35920, 64160, 71840, 180049, 360098, 720196, 900245, 1440392, 1800490, 2880784, 3600980, 5761568, 7201960, 14403920, 28807840]

約数ペア:
[(1, 28807840), (2, 14403920), (4, 7201960), (5, 5761568), (8, 3600980), (10, 2880784), (16, 1800490), (20, 1440392), (32, 900245), (40, 720196), (80, 360098), (160, 180049), (401, 71840), (449, 64160), (802, 35920), (898, 32080), (1604, 17960), (1796, 16040), (2005, 14368), (2245, 12832), (3208, 8980), (3592, 8020), (4010, 7184), (4490, 6416)]

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