About the Number

20006987

20006986 ← → 20006988

2進数表記:1001100010100100001001011

漢数字表記:二千万六千九百八十七

素因数分解:

7 1 × 11 2 × 13 1 × 23 1 × 79 1

素因数の和:144
約数の個数: 48
約数和(自身を含む): 28600320
約数和(自身を除く): 8593333

約数列:
[1, 7, 11, 13, 23, 77, 79, 91, 121, 143, 161, 253, 299, 553, 847, 869, 1001, 1027, 1573, 1771, 1817, 2093, 2783, 3289, 6083, 7189, 9559, 11011, 11297, 12719, 19481, 19987, 23023, 23621, 36179, 66913, 79079, 124267, 139909, 165347, 219857, 253253, 259831, 869869, 1538999, 1818817, 2858141, 20006987]

約数ペア:
[(1, 20006987), (7, 2858141), (11, 1818817), (13, 1538999), (23, 869869), (77, 259831), (79, 253253), (91, 219857), (121, 165347), (143, 139909), (161, 124267), (253, 79079), (299, 66913), (553, 36179), (847, 23621), (869, 23023), (1001, 19987), (1027, 19481), (1573, 12719), (1771, 11297), (1817, 11011), (2093, 9559), (2783, 7189), (3289, 6083)]

このpageの処理時間: 0.004506826400756836 seconds