77886440

素因数分解:

$2^3\times 5^1\times {\mathrm{977}}^1\times {\mathrm{1993}}^1$

素因数の和:2981

約数の個数: 32

約数和(自身を含む): 175511880

約数和(自身を除く): 97625440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 977, 1954, 1993, 3908, 3986, 4885, 7816, 7972, 9770, 9965, 15944, 19540, 19930, 39080, 39860, 79720, 1947161, 3894322, 7788644, 9735805, 15577288, 19471610, 38943220, 77886440]

約数ペア:

[(1, 77886440), (2, 38943220), (4, 19471610), (5, 15577288), (8, 9735805), (10, 7788644), (20, 3894322), (40, 1947161), (977, 79720), (1954, 39860), (1993, 39080), (3908, 19930), (3986, 19540), (4885, 15944), (7816, 9965), (7972, 9770)]