21457010

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{24109}}^1$

素因数の和:24205

約数の個数: 16

約数和(自身を含む): 39058200

約数和(自身を除く): 17601190

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 24109, 48218, 120545, 241090, 2145701, 4291402, 10728505, 21457010]

約数ペア:

[(1, 21457010), (2, 10728505), (5, 4291402), (10, 2145701), (89, 241090), (178, 120545), (445, 48218), (890, 24109)]