About the Number

28209987

28209986 ← → 28209988

2進数表記:1101011100111001101000011

漢数字表記:二千八百二十万九千九百八十七

素因数分解:

3 2 × 13 2 × 17 1 × 1091 1

素因数の和:1140
約数の個数: 36
約数和(自身を含む): 46761624
約数和(自身を除く): 18551637

約数列:
[1, 3, 9, 13, 17, 39, 51, 117, 153, 169, 221, 507, 663, 1091, 1521, 1989, 2873, 3273, 8619, 9819, 14183, 18547, 25857, 42549, 55641, 127647, 166923, 184379, 241111, 553137, 723333, 1659411, 2169999, 3134443, 9403329, 28209987]

約数ペア:
[(1, 28209987), (3, 9403329), (9, 3134443), (13, 2169999), (17, 1659411), (39, 723333), (51, 553137), (117, 241111), (153, 184379), (169, 166923), (221, 127647), (507, 55641), (663, 42549), (1091, 25857), (1521, 18547), (1989, 14183), (2873, 9819), (3273, 8619)]

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