18810590

素因数分解:

$2^1\times 5^1\times {\mathrm{941}}^1\times {\mathrm{1999}}^1$

素因数の和:2947

約数の個数: 16

約数和(自身を含む): 33912000

約数和(自身を除く): 15101410

約数列:

[1, 2, 5, 10, 941, 1882, 1999, 3998, 4705, 9410, 9995, 19990, 1881059, 3762118, 9405295, 18810590]

約数ペア:

[(1, 18810590), (2, 9405295), (5, 3762118), (10, 1881059), (941, 19990), (1882, 9995), (1999, 9410), (3998, 4705)]