About the Number

12990390

12990389 ← → 12990391

2進数表記:110001100011011110110110

漢数字表記:千二百九十九万三百九十

素因数分解:

2 1 × 3 1 × 5 1 × 7 2 × 8837 1

素因数の和:8861
約数の個数: 48
約数和(自身を含む): 36271152
約数和(自身を除く): 23280762

約数列:
[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 49, 70, 98, 105, 147, 210, 245, 294, 490, 735, 1470, 8837, 17674, 26511, 44185, 53022, 61859, 88370, 123718, 132555, 185577, 265110, 309295, 371154, 433013, 618590, 866026, 927885, 1299039, 1855770, 2165065, 2598078, 4330130, 6495195, 12990390]

約数ペア:
[(1, 12990390), (2, 6495195), (3, 4330130), (5, 2598078), (6, 2165065), (7, 1855770), (10, 1299039), (14, 927885), (15, 866026), (21, 618590), (30, 433013), (35, 371154), (42, 309295), (49, 265110), (70, 185577), (98, 132555), (105, 123718), (147, 88370), (210, 61859), (245, 53022), (294, 44185), (490, 26511), (735, 17674), (1470, 8837)]

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