21000736505

素因数分解:

$5^1\times 7^1\times {\mathrm{73433}}^1\times {\mathrm{8171}}^1$

素因数の和:81616

約数の個数: 16

約数和(自身を含む): 28804927104

約数和(自身を除く): 7804190599

約数列:

[1, 5, 7, 35, 8171, 40855, 57197, 73433, 285985, 367165, 514031, 2570155, 600021043, 3000105215, 4200147301, 21000736505]

約数ペア:

[(1, 21000736505), (5, 4200147301), (7, 3000105215), (35, 600021043), (8171, 2570155), (40855, 514031), (57197, 367165), (73433, 285985)]