408075280

素因数分解:

$2^4\times 5^1\times {\mathrm{5100941}}^1$

素因数の和:5100954

約数の個数: 20

約数和(自身を含む): 948775212

約数和(自身を除く): 540699932

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 5100941, 10201882, 20403764, 25504705, 40807528, 51009410, 81615056, 102018820, 204037640, 408075280]

約数ペア:

[(1, 408075280), (2, 204037640), (4, 102018820), (5, 81615056), (8, 51009410), (10, 40807528), (16, 25504705), (20, 20403764), (40, 10201882), (80, 5100941)]