80552980

素因数分解:

$2^2\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{2027}}^1$

素因数の和:4023

約数の個数: 24

約数和(自身を含む): 169329888

約数和(自身を除く): 88776908

約数列:

[1, 2, 4, 5, 10, 20, 1987, 2027, 3974, 4054, 7948, 8108, 9935, 10135, 19870, 20270, 39740, 40540, 4027649, 8055298, 16110596, 20138245, 40276490, 80552980]

約数ペア:

[(1, 80552980), (2, 40276490), (4, 20138245), (5, 16110596), (10, 8055298), (20, 4027649), (1987, 40540), (2027, 39740), (3974, 20270), (4054, 19870), (7948, 10135), (8108, 9935)]