About the Number

128400

128399 ← → 128401

2進数表記:11111010110010000

漢数字表記:十二万八千四百

素因数分解:

2 4 × 3 1 × 5 2 × 107 1

素因数の和:128
約数の個数: 60
約数和(自身を含む): 415152
約数和(自身を除く): 286752

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 40, 48, 50, 60, 75, 80, 100, 107, 120, 150, 200, 214, 240, 300, 321, 400, 428, 535, 600, 642, 856, 1070, 1200, 1284, 1605, 1712, 2140, 2568, 2675, 3210, 4280, 5136, 5350, 6420, 8025, 8560, 10700, 12840, 16050, 21400, 25680, 32100, 42800, 64200, 128400]

約数ペア:
[(1, 128400), (2, 64200), (3, 42800), (4, 32100), (5, 25680), (6, 21400), (8, 16050), (10, 12840), (12, 10700), (15, 8560), (16, 8025), (20, 6420), (24, 5350), (25, 5136), (30, 4280), (40, 3210), (48, 2675), (50, 2568), (60, 2140), (75, 1712), (80, 1605), (100, 1284), (107, 1200), (120, 1070), (150, 856), (200, 642), (214, 600), (240, 535), (300, 428), (321, 400)]

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