80256980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{56519}}^1$

素因数の和:56599

約数の個数: 24

約数和(自身を含む): 170916480

約数和(自身を除く): 90659500

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 56519, 113038, 226076, 282595, 565190, 1130380, 4012849, 8025698, 16051396, 20064245, 40128490, 80256980]

約数ペア:

[(1, 80256980), (2, 40128490), (4, 20064245), (5, 16051396), (10, 8025698), (20, 4012849), (71, 1130380), (142, 565190), (284, 282595), (355, 226076), (710, 113038), (1420, 56519)]