About the Number

81320880

81320879 ← → 81320881

2進数表記:100110110001101101110110000

漢数字表記:八千百三十二万八百八十

素因数分解:

2 4 × 3 1 × 5 1 × 59 1 × 5743 1

素因数の和:5818
約数の個数: 80
約数和(自身を含む): 256412160
約数和(自身を除く): 175091280

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 59, 60, 80, 118, 120, 177, 236, 240, 295, 354, 472, 590, 708, 885, 944, 1180, 1416, 1770, 2360, 2832, 3540, 4720, 5743, 7080, 11486, 14160, 17229, 22972, 28715, 34458, 45944, 57430, 68916, 86145, 91888, 114860, 137832, 172290, 229720, 275664, 338837, 344580, 459440, 677674, 689160, 1016511, 1355348, 1378320, 1694185, 2033022, 2710696, 3388370, 4066044, 5082555, 5421392, 6776740, 8132088, 10165110, 13553480, 16264176, 20330220, 27106960, 40660440, 81320880]

約数ペア:
[(1, 81320880), (2, 40660440), (3, 27106960), (4, 20330220), (5, 16264176), (6, 13553480), (8, 10165110), (10, 8132088), (12, 6776740), (15, 5421392), (16, 5082555), (20, 4066044), (24, 3388370), (30, 2710696), (40, 2033022), (48, 1694185), (59, 1378320), (60, 1355348), (80, 1016511), (118, 689160), (120, 677674), (177, 459440), (236, 344580), (240, 338837), (295, 275664), (354, 229720), (472, 172290), (590, 137832), (708, 114860), (885, 91888), (944, 86145), (1180, 68916), (1416, 57430), (1770, 45944), (2360, 34458), (2832, 28715), (3540, 22972), (4720, 17229), (5743, 14160), (7080, 11486)]

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