20006500

素因数分解:

$2^2\times 5^3\times {\mathrm{40013}}^1$

素因数の和:40032

約数の個数: 24

約数和(自身を含む): 43695288

約数和(自身を除く): 23688788

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 40013, 80026, 160052, 200065, 400130, 800260, 1000325, 2000650, 4001300, 5001625, 10003250, 20006500]

約数ペア:

[(1, 20006500), (2, 10003250), (4, 5001625), (5, 4001300), (10, 2000650), (20, 1000325), (25, 800260), (50, 400130), (100, 200065), (125, 160052), (250, 80026), (500, 40013)]