About the Number

81980004

81980003 ← → 81980005

2進数表記:100111000101110101001100100

漢数字表記:八千百九十八万四

素因数分解:

2 2 × 3 1 × 23 1 × 317 1 × 937 1

素因数の和:1284
約数の個数: 48
約数和(自身を含む): 200446848
約数和(自身を除く): 118466844

約数列:
[1, 2, 3, 4, 6, 12, 23, 46, 69, 92, 138, 276, 317, 634, 937, 951, 1268, 1874, 1902, 2811, 3748, 3804, 5622, 7291, 11244, 14582, 21551, 21873, 29164, 43102, 43746, 64653, 86204, 87492, 129306, 258612, 297029, 594058, 891087, 1188116, 1782174, 3564348, 6831667, 13663334, 20495001, 27326668, 40990002, 81980004]

約数ペア:
[(1, 81980004), (2, 40990002), (3, 27326668), (4, 20495001), (6, 13663334), (12, 6831667), (23, 3564348), (46, 1782174), (69, 1188116), (92, 891087), (138, 594058), (276, 297029), (317, 258612), (634, 129306), (937, 87492), (951, 86204), (1268, 64653), (1874, 43746), (1902, 43102), (2811, 29164), (3748, 21873), (3804, 21551), (5622, 14582), (7291, 11244)]

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