198002020

素因数分解:

$2^2\times 5^1\times {\mathrm{9900101}}^1$

素因数の和:9900110

約数の個数: 12

約数和(自身を含む): 415804284

約数和(自身を除く): 217802264

約数列:

[1, 2, 4, 5, 10, 20, 9900101, 19800202, 39600404, 49500505, 99001010, 198002020]

約数ペア:

[(1, 198002020), (2, 99001010), (4, 49500505), (5, 39600404), (10, 19800202), (20, 9900101)]