About the Number

20402991

20402990 ← → 20402992

2進数表記:1001101110101001100101111

漢数字表記:二千四十万二千九百九十一

素因数分解:

3 2 × 7 1 × 31 2 × 337 1

素因数の和:412
約数の個数: 36
約数和(自身を含む): 34905936
約数和(自身を除く): 14502945

約数列:
[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 337, 651, 961, 1011, 1953, 2359, 2883, 3033, 6727, 7077, 8649, 10447, 20181, 21231, 31341, 60543, 73129, 94023, 219387, 323857, 658161, 971571, 2266999, 2914713, 6800997, 20402991]

約数ペア:
[(1, 20402991), (3, 6800997), (7, 2914713), (9, 2266999), (21, 971571), (31, 658161), (63, 323857), (93, 219387), (217, 94023), (279, 73129), (337, 60543), (651, 31341), (961, 21231), (1011, 20181), (1953, 10447), (2359, 8649), (2883, 7077), (3033, 6727)]

このpageの処理時間: 0.04220271110534668 seconds