About the Number

2171280

2171279 ← → 2171281

2進数表記:1000010010000110010000

漢数字表記:二百十七万千二百八十

素因数分解:

2 4 × 3 1 × 5 1 × 83 1 × 109 1

素因数の和:208
約数の個数: 80
約数和(自身を含む): 6874560
約数和(自身を除く): 4703280

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 83, 109, 120, 166, 218, 240, 249, 327, 332, 415, 436, 498, 545, 654, 664, 830, 872, 996, 1090, 1245, 1308, 1328, 1635, 1660, 1744, 1992, 2180, 2490, 2616, 3270, 3320, 3984, 4360, 4980, 5232, 6540, 6640, 8720, 9047, 9960, 13080, 18094, 19920, 26160, 27141, 36188, 45235, 54282, 72376, 90470, 108564, 135705, 144752, 180940, 217128, 271410, 361880, 434256, 542820, 723760, 1085640, 2171280]

約数ペア:
[(1, 2171280), (2, 1085640), (3, 723760), (4, 542820), (5, 434256), (6, 361880), (8, 271410), (10, 217128), (12, 180940), (15, 144752), (16, 135705), (20, 108564), (24, 90470), (30, 72376), (40, 54282), (48, 45235), (60, 36188), (80, 27141), (83, 26160), (109, 19920), (120, 18094), (166, 13080), (218, 9960), (240, 9047), (249, 8720), (327, 6640), (332, 6540), (415, 5232), (436, 4980), (498, 4360), (545, 3984), (654, 3320), (664, 3270), (830, 2616), (872, 2490), (996, 2180), (1090, 1992), (1245, 1744), (1308, 1660), (1328, 1635)]

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