20852420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{24247}}^1$

素因数の和:24299

約数の個数: 24

約数和(自身を含む): 44810304

約数和(自身を除く): 23957884

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 24247, 48494, 96988, 121235, 242470, 484940, 1042621, 2085242, 4170484, 5213105, 10426210, 20852420]

約数ペア:

[(1, 20852420), (2, 10426210), (4, 5213105), (5, 4170484), (10, 2085242), (20, 1042621), (43, 484940), (86, 242470), (172, 121235), (215, 96988), (430, 48494), (860, 24247)]