20513036

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{72229}}^1$

素因数の和:72304

約数の個数: 12

約数和(自身を含む): 36403920

約数和(自身を除く): 15890884

約数列:

[1, 2, 4, 71, 142, 284, 72229, 144458, 288916, 5128259, 10256518, 20513036]

約数ペア:

[(1, 20513036), (2, 10256518), (4, 5128259), (71, 288916), (142, 144458), (284, 72229)]