19956020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{142543}}^1$

素因数の和:142559

約数の個数: 24

約数和(自身を含む): 47894784

約数和(自身を除く): 27938764

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 142543, 285086, 570172, 712715, 997801, 1425430, 1995602, 2850860, 3991204, 4989005, 9978010, 19956020]

約数ペア:

[(1, 19956020), (2, 9978010), (4, 4989005), (5, 3991204), (7, 2850860), (10, 1995602), (14, 1425430), (20, 997801), (28, 712715), (35, 570172), (70, 285086), (140, 142543)]