About the Number

128880

128879 ← → 128881

2進数表記:11111011101110000

漢数字表記:十二万八千八百八十

素因数分解:

2 4 × 3 2 × 5 1 × 179 1

素因数の和:198
約数の個数: 60
約数和(自身を含む): 435240
約数和(自身を除く): 306360

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 179, 180, 240, 358, 360, 537, 716, 720, 895, 1074, 1432, 1611, 1790, 2148, 2685, 2864, 3222, 3580, 4296, 5370, 6444, 7160, 8055, 8592, 10740, 12888, 14320, 16110, 21480, 25776, 32220, 42960, 64440, 128880]

約数ペア:
[(1, 128880), (2, 64440), (3, 42960), (4, 32220), (5, 25776), (6, 21480), (8, 16110), (9, 14320), (10, 12888), (12, 10740), (15, 8592), (16, 8055), (18, 7160), (20, 6444), (24, 5370), (30, 4296), (36, 3580), (40, 3222), (45, 2864), (48, 2685), (60, 2148), (72, 1790), (80, 1611), (90, 1432), (120, 1074), (144, 895), (179, 720), (180, 716), (240, 537), (358, 360)]

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