201989907

素因数分解:

$3^2\times 7^2\times {\mathrm{458027}}^1$

素因数の和:458047

約数の個数: 18

約数和(自身を含む): 339398748

約数和(自身を除く): 137408841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 458027, 1374081, 3206189, 4122243, 9618567, 22443323, 28855701, 67329969, 201989907]

約数ペア:

[(1, 201989907), (3, 67329969), (7, 28855701), (9, 22443323), (21, 9618567), (49, 4122243), (63, 3206189), (147, 1374081), (441, 458027)]