About the Number
20421880
2進数表記:1001101111001110011111000
漢数字表記:二千四十二万千八百八十
素因数分解:
素因数の和:3823
約数の個数: 32
約数和(自身を含む): 46292400
約数和(自身を除く): 25870520
約数列:
[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 3673, 5560, 7346, 14692, 18365, 29384, 36730, 73460, 146920, 510547, 1021094, 2042188, 2552735, 4084376, 5105470, 10210940, 20421880]
約数ペア:
[(1, 20421880), (2, 10210940), (4, 5105470), (5, 4084376), (8, 2552735), (10, 2042188), (20, 1021094), (40, 510547), (139, 146920), (278, 73460), (556, 36730), (695, 29384), (1112, 18365), (1390, 14692), (2780, 7346), (3673, 5560)]このpageの処理時間: 0.02045726776123047 seconds