319419280

素因数分解:

$2^4\times 5^1\times {\mathrm{3992741}}^1$

素因数の和:3992754

約数の個数: 20

約数和(自身を含む): 742650012

約数和(自身を除く): 423230732

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3992741, 7985482, 15970964, 19963705, 31941928, 39927410, 63883856, 79854820, 159709640, 319419280]

約数ペア:

[(1, 319419280), (2, 159709640), (4, 79854820), (5, 63883856), (8, 39927410), (10, 31941928), (16, 19963705), (20, 15970964), (40, 7985482), (80, 3992741)]