20512480

素因数分解:

$2^5\times 5^1\times {\mathrm{128203}}^1$

素因数の和:128218

約数の個数: 24

約数和(自身を含む): 48461112

約数和(自身を除く): 27948632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 128203, 256406, 512812, 641015, 1025624, 1282030, 2051248, 2564060, 4102496, 5128120, 10256240, 20512480]

約数ペア:

[(1, 20512480), (2, 10256240), (4, 5128120), (5, 4102496), (8, 2564060), (10, 2051248), (16, 1282030), (20, 1025624), (32, 641015), (40, 512812), (80, 256406), (160, 128203)]