20987270

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{91249}}^1$

素因数の和:91279

約数の個数: 16

約数和(自身を含む): 39420000

約数和(自身を除く): 18432730

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 91249, 182498, 456245, 912490, 2098727, 4197454, 10493635, 20987270]

約数ペア:

[(1, 20987270), (2, 10493635), (5, 4197454), (10, 2098727), (23, 912490), (46, 456245), (115, 182498), (230, 91249)]