20498290

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89123}}^1$

素因数の和:89153

約数の個数: 16

約数和(自身を含む): 38501568

約数和(自身を除く): 18003278

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 89123, 178246, 445615, 891230, 2049829, 4099658, 10249145, 20498290]

約数ペア:

[(1, 20498290), (2, 10249145), (5, 4099658), (10, 2049829), (23, 891230), (46, 445615), (115, 178246), (230, 89123)]