About the Number

142121790

142121789 ← → 142121791

2進数表記:1000011110001001101100111110

漢数字表記:一億四千二百十二万千七百九十

素因数分解:

2 1 × 3 4 × 5 1 × 79 1 × 2221 1

素因数の和:2319
約数の個数: 80
約数和(自身を含む): 387161280
約数和(自身を除く): 245039490

約数列:
[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 79, 81, 90, 135, 158, 162, 237, 270, 395, 405, 474, 711, 790, 810, 1185, 1422, 2133, 2221, 2370, 3555, 4266, 4442, 6399, 6663, 7110, 10665, 11105, 12798, 13326, 19989, 21330, 22210, 31995, 33315, 39978, 59967, 63990, 66630, 99945, 119934, 175459, 179901, 199890, 299835, 350918, 359802, 526377, 599670, 877295, 899505, 1052754, 1579131, 1754590, 1799010, 2631885, 3158262, 4737393, 5263770, 7895655, 9474786, 14212179, 15791310, 23686965, 28424358, 47373930, 71060895, 142121790]

約数ペア:
[(1, 142121790), (2, 71060895), (3, 47373930), (5, 28424358), (6, 23686965), (9, 15791310), (10, 14212179), (15, 9474786), (18, 7895655), (27, 5263770), (30, 4737393), (45, 3158262), (54, 2631885), (79, 1799010), (81, 1754590), (90, 1579131), (135, 1052754), (158, 899505), (162, 877295), (237, 599670), (270, 526377), (395, 359802), (405, 350918), (474, 299835), (711, 199890), (790, 179901), (810, 175459), (1185, 119934), (1422, 99945), (2133, 66630), (2221, 63990), (2370, 59967), (3555, 39978), (4266, 33315), (4442, 31995), (6399, 22210), (6663, 21330), (7110, 19989), (10665, 13326), (11105, 12798)]

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