About the Number

128897990

128897989 ← → 128897991

2進数表記:111101011101101001111000110

漢数字表記:一億二千八百八十九万七千九百九十

素因数分解:

2 1 × 5 1 × 13 3 × 5867 1

素因数の和:5913
約数の個数: 32
約数和(自身を含む): 251385120
約数和(自身を除く): 122487130

約数列:
[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 2197, 4394, 5867, 10985, 11734, 21970, 29335, 58670, 76271, 152542, 381355, 762710, 991523, 1983046, 4957615, 9915230, 12889799, 25779598, 64448995, 128897990]

約数ペア:
[(1, 128897990), (2, 64448995), (5, 25779598), (10, 12889799), (13, 9915230), (26, 4957615), (65, 1983046), (130, 991523), (169, 762710), (338, 381355), (845, 152542), (1690, 76271), (2197, 58670), (4394, 29335), (5867, 21970), (10985, 11734)]

このpageの処理時間: 0.05208444595336914 seconds