77885722520

素因数分解:

$2^3\times 5^1\times {\mathrm{1993}}^1\times {\mathrm{976991}}^1$

素因数の和:978995

約数の個数: 32

約数和(自身を含む): 175330984320

約数和(自身を除く): 97445261800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1993, 3986, 7972, 9965, 15944, 19930, 39860, 79720, 976991, 1953982, 3907964, 4884955, 7815928, 9769910, 19539820, 39079640, 1947143063, 3894286126, 7788572252, 9735715315, 15577144504, 19471430630, 38942861260, 77885722520]

約数ペア:

[(1, 77885722520), (2, 38942861260), (4, 19471430630), (5, 15577144504), (8, 9735715315), (10, 7788572252), (20, 3894286126), (40, 1947143063), (1993, 39079640), (3986, 19539820), (7972, 9769910), (9965, 7815928), (15944, 4884955), (19930, 3907964), (39860, 1953982), (79720, 976991)]