20440520

素因数分解:

$2^3\times 5^1\times {\mathrm{511013}}^1$

素因数の和:511024

約数の個数: 16

約数和(自身を含む): 45991260

約数和(自身を除く): 25550740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 511013, 1022026, 2044052, 2555065, 4088104, 5110130, 10220260, 20440520]

約数ペア:

[(1, 20440520), (2, 10220260), (4, 5110130), (5, 4088104), (8, 2555065), (10, 2044052), (20, 1022026), (40, 511013)]