About the Number

661328880

661328879 ← → 661328881

2進数表記:100111011010110001001111110000

漢数字表記:六億六千百三十二万八千八百八十

素因数分解:

2 4 × 3 1 × 5 1 × 1427 1 × 1931 1

素因数の和:3374
約数の個数: 80
約数和(自身を含む): 2052618624
約数和(自身を除く): 1391289744

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 1427, 1931, 2854, 3862, 4281, 5708, 5793, 7135, 7724, 8562, 9655, 11416, 11586, 14270, 15448, 17124, 19310, 21405, 22832, 23172, 28540, 28965, 30896, 34248, 38620, 42810, 46344, 57080, 57930, 68496, 77240, 85620, 92688, 114160, 115860, 154480, 171240, 231720, 342480, 463440, 2755537, 5511074, 8266611, 11022148, 13777685, 16533222, 22044296, 27555370, 33066444, 41333055, 44088592, 55110740, 66132888, 82666110, 110221480, 132265776, 165332220, 220442960, 330664440, 661328880]

約数ペア:
[(1, 661328880), (2, 330664440), (3, 220442960), (4, 165332220), (5, 132265776), (6, 110221480), (8, 82666110), (10, 66132888), (12, 55110740), (15, 44088592), (16, 41333055), (20, 33066444), (24, 27555370), (30, 22044296), (40, 16533222), (48, 13777685), (60, 11022148), (80, 8266611), (120, 5511074), (240, 2755537), (1427, 463440), (1931, 342480), (2854, 231720), (3862, 171240), (4281, 154480), (5708, 115860), (5793, 114160), (7135, 92688), (7724, 85620), (8562, 77240), (9655, 68496), (11416, 57930), (11586, 57080), (14270, 46344), (15448, 42810), (17124, 38620), (19310, 34248), (21405, 30896), (22832, 28965), (23172, 28540)]

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