About the Number
20804721
2進数表記:1001111010111010001110001
漢数字表記:二千八十万四千七百二十一
素因数分解:
素因数の和:329
約数の個数: 32
約数和(自身を含む): 32736000
約数和(自身を除く): 11931279
約数列:
[1, 3, 7, 21, 61, 109, 149, 183, 327, 427, 447, 763, 1043, 1281, 2289, 3129, 6649, 9089, 16241, 19947, 27267, 46543, 48723, 63623, 113687, 139629, 190869, 341061, 990701, 2972103, 6934907, 20804721]
約数ペア:
[(1, 20804721), (3, 6934907), (7, 2972103), (21, 990701), (61, 341061), (109, 190869), (149, 139629), (183, 113687), (327, 63623), (427, 48723), (447, 46543), (763, 27267), (1043, 19947), (1281, 16241), (2289, 9089), (3129, 6649)]このpageの処理時間: 0.022808551788330078 seconds