1982100020

素因数分解:

$2^2\times 5^1\times {\mathrm{99105001}}^1$

素因数の和:99105010

約数の個数: 12

約数和(自身を含む): 4162410084

約数和(自身を除く): 2180310064

約数列:

[1, 2, 4, 5, 10, 20, 99105001, 198210002, 396420004, 495525005, 991050010, 1982100020]

約数ペア:

[(1, 1982100020), (2, 991050010), (4, 495525005), (5, 396420004), (10, 198210002), (20, 99105001)]