80349680

素因数分解:

$2^4\times 5^1\times {\mathrm{1004371}}^1$

素因数の和:1004384

約数の個数: 20

約数和(自身を含む): 186813192

約数和(自身を除く): 106463512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1004371, 2008742, 4017484, 5021855, 8034968, 10043710, 16069936, 20087420, 40174840, 80349680]

約数ペア:

[(1, 80349680), (2, 40174840), (4, 20087420), (5, 16069936), (8, 10043710), (10, 8034968), (16, 5021855), (20, 4017484), (40, 2008742), (80, 1004371)]