1997199

素因数分解:

$3^2\times {\mathrm{53}}^2\times {\mathrm{79}}^1$

素因数の和:191

約数の個数: 18

約数和(自身を含む): 2977520

約数和(自身を除く): 980321

約数列:

[1, 3, 9, 53, 79, 159, 237, 477, 711, 2809, 4187, 8427, 12561, 25281, 37683, 221911, 665733, 1997199]

約数ペア:

[(1, 1997199), (3, 665733), (9, 221911), (53, 37683), (79, 25281), (159, 12561), (237, 8427), (477, 4187), (711, 2809)]