About the Number
640970890
2進数表記:100110001101000111000010001010
漢数字表記:六億四千九十七万八百九十
素因数分解:
素因数の和:28399
約数の個数: 64
約数和(自身を含む): 1469664000
約数和(自身を除く): 828693110
約数列:
[1, 2, 5, 7, 10, 14, 17, 19, 34, 35, 38, 70, 85, 95, 119, 133, 170, 190, 238, 266, 323, 595, 646, 665, 1190, 1330, 1615, 2261, 3230, 4522, 11305, 22610, 28349, 56698, 141745, 198443, 283490, 396886, 481933, 538631, 963866, 992215, 1077262, 1984430, 2409665, 2693155, 3373531, 3770417, 4819330, 5386310, 6747062, 7540834, 9156727, 16867655, 18313454, 18852085, 33735310, 37704170, 45783635, 64097089, 91567270, 128194178, 320485445, 640970890]
約数ペア:
[(1, 640970890), (2, 320485445), (5, 128194178), (7, 91567270), (10, 64097089), (14, 45783635), (17, 37704170), (19, 33735310), (34, 18852085), (35, 18313454), (38, 16867655), (70, 9156727), (85, 7540834), (95, 6747062), (119, 5386310), (133, 4819330), (170, 3770417), (190, 3373531), (238, 2693155), (266, 2409665), (323, 1984430), (595, 1077262), (646, 992215), (665, 963866), (1190, 538631), (1330, 481933), (1615, 396886), (2261, 283490), (3230, 198443), (4522, 141745), (11305, 56698), (22610, 28349)]このpageの処理時間: 0.013602733612060547 seconds