About the Number

131490

131489 ← → 131491

2進数表記:100000000110100010

漢数字表記:十三万千四百九十

素因数分解:

2 1 × 3 3 × 5 1 × 487 1

素因数の和:503
約数の個数: 32
約数和(自身を含む): 351360
約数和(自身を除く): 219870

約数列:
[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 270, 487, 974, 1461, 2435, 2922, 4383, 4870, 7305, 8766, 13149, 14610, 21915, 26298, 43830, 65745, 131490]

約数ペア:
[(1, 131490), (2, 65745), (3, 43830), (5, 26298), (6, 21915), (9, 14610), (10, 13149), (15, 8766), (18, 7305), (27, 4870), (30, 4383), (45, 2922), (54, 2435), (90, 1461), (135, 974), (270, 487)]

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