About the Number

7280140

7280139 ← → 7280141

2進数表記:11011110001011000001100

漢数字表記:七百二十八万百四十

素因数分解:

2 2 × 5 1 × 7 1 × 149 1 × 349 1

素因数の和:514
約数の個数: 48
約数和(自身を含む): 17640000
約数和(自身を除く): 10359860

約数列:
[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 349, 596, 698, 745, 1043, 1396, 1490, 1745, 2086, 2443, 2980, 3490, 4172, 4886, 5215, 6980, 9772, 10430, 12215, 20860, 24430, 48860, 52001, 104002, 208004, 260005, 364007, 520010, 728014, 1040020, 1456028, 1820035, 3640070, 7280140]

約数ペア:
[(1, 7280140), (2, 3640070), (4, 1820035), (5, 1456028), (7, 1040020), (10, 728014), (14, 520010), (20, 364007), (28, 260005), (35, 208004), (70, 104002), (140, 52001), (149, 48860), (298, 24430), (349, 20860), (596, 12215), (698, 10430), (745, 9772), (1043, 6980), (1396, 5215), (1490, 4886), (1745, 4172), (2086, 3490), (2443, 2980)]

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