201998972161

素因数分解:

$7^1\times {\mathrm{23}}^2\times {\mathrm{54550087}}^1$

素因数の和:54550140

約数の個数: 12

約数和(自身を含む): 241329589312

約数和(自身を除く): 39330617151

約数列:

[1, 7, 23, 161, 529, 3703, 54550087, 381850609, 1254652001, 8782564007, 28856996023, 201998972161]

約数ペア:

[(1, 201998972161), (7, 28856996023), (23, 8782564007), (161, 1254652001), (529, 381850609), (3703, 54550087)]