12980080

素因数分解:

$2^4\times 5^1\times {\mathrm{162251}}^1$

素因数の和:162264

約数の個数: 20

約数和(自身を含む): 30178872

約数和(自身を除く): 17198792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 162251, 324502, 649004, 811255, 1298008, 1622510, 2596016, 3245020, 6490040, 12980080]

約数ペア:

[(1, 12980080), (2, 6490040), (4, 3245020), (5, 2596016), (8, 1622510), (10, 1298008), (16, 811255), (20, 649004), (40, 324502), (80, 162251)]