About the Number

128100

128099 ← → 128101

2進数表記:11111010001100100

漢数字表記:十二万八千百

素因数分解:

2 2 × 3 1 × 5 2 × 7 1 × 61 1

素因数の和:85
約数の個数: 72
約数和(自身を含む): 430528
約数和(自身を除く): 302428

約数列:
[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 61, 70, 75, 84, 100, 105, 122, 140, 150, 175, 183, 210, 244, 300, 305, 350, 366, 420, 427, 525, 610, 700, 732, 854, 915, 1050, 1220, 1281, 1525, 1708, 1830, 2100, 2135, 2562, 3050, 3660, 4270, 4575, 5124, 6100, 6405, 8540, 9150, 10675, 12810, 18300, 21350, 25620, 32025, 42700, 64050, 128100]

約数ペア:
[(1, 128100), (2, 64050), (3, 42700), (4, 32025), (5, 25620), (6, 21350), (7, 18300), (10, 12810), (12, 10675), (14, 9150), (15, 8540), (20, 6405), (21, 6100), (25, 5124), (28, 4575), (30, 4270), (35, 3660), (42, 3050), (50, 2562), (60, 2135), (61, 2100), (70, 1830), (75, 1708), (84, 1525), (100, 1281), (105, 1220), (122, 1050), (140, 915), (150, 854), (175, 732), (183, 700), (210, 610), (244, 525), (300, 427), (305, 420), (350, 366)]

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