20881010

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{90787}}^1$

素因数の和:90817

約数の個数: 16

約数和(自身を含む): 39220416

約数和(自身を除く): 18339406

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 90787, 181574, 453935, 907870, 2088101, 4176202, 10440505, 20881010]

約数ペア:

[(1, 20881010), (2, 10440505), (5, 4176202), (10, 2088101), (23, 907870), (46, 453935), (115, 181574), (230, 90787)]