127880080

素因数分解:

$2^4\times 5^1\times {\mathrm{1598501}}^1$

素因数の和:1598514

約数の個数: 20

約数和(自身を含む): 297321372

約数和(自身を除く): 169441292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1598501, 3197002, 6394004, 7992505, 12788008, 15985010, 25576016, 31970020, 63940040, 127880080]

約数ペア:

[(1, 127880080), (2, 63940040), (4, 31970020), (5, 25576016), (8, 15985010), (10, 12788008), (16, 7992505), (20, 6394004), (40, 3197002), (80, 1598501)]