About the Number

2106405

2106404 ← → 2106406

2進数表記:1000000010010000100101

漢数字表記:二百十万六千四百五

素因数分解:

3 4 × 5 1 × 7 1 × 743 1

素因数の和:767
約数の個数: 40
約数和(自身を含む): 4321152
約数和(自身を除く): 2214747

約数列:
[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 743, 945, 2229, 2835, 3715, 5201, 6687, 11145, 15603, 20061, 26005, 33435, 46809, 60183, 78015, 100305, 140427, 234045, 300915, 421281, 702135, 2106405]

約数ペア:
[(1, 2106405), (3, 702135), (5, 421281), (7, 300915), (9, 234045), (15, 140427), (21, 100305), (27, 78015), (35, 60183), (45, 46809), (63, 33435), (81, 26005), (105, 20061), (135, 15603), (189, 11145), (315, 6687), (405, 5201), (567, 3715), (743, 2835), (945, 2229)]

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