77939480

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{4001}}^1$

素因数の和:4499

約数の個数: 32

約数和(自身を含む): 175767840

約数和(自身を除く): 97828360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1948, 2435, 3896, 4001, 4870, 8002, 9740, 16004, 19480, 20005, 32008, 40010, 80020, 160040, 1948487, 3896974, 7793948, 9742435, 15587896, 19484870, 38969740, 77939480]

約数ペア:

[(1, 77939480), (2, 38969740), (4, 19484870), (5, 15587896), (8, 9742435), (10, 7793948), (20, 3896974), (40, 1948487), (487, 160040), (974, 80020), (1948, 40010), (2435, 32008), (3896, 20005), (4001, 19480), (4870, 16004), (8002, 9740)]