201420639

素因数分解:

$3^2\times 7^1\times {\mathrm{409}}^1\times {\mathrm{7817}}^1$

素因数の和:8239

約数の個数: 24

約数和(自身を含む): 333359520

約数和(自身を除く): 131938881

約数列:

[1, 3, 7, 9, 21, 63, 409, 1227, 2863, 3681, 7817, 8589, 23451, 25767, 54719, 70353, 164157, 492471, 3197153, 9591459, 22380071, 28774377, 67140213, 201420639]

約数ペア:

[(1, 201420639), (3, 67140213), (7, 28774377), (9, 22380071), (21, 9591459), (63, 3197153), (409, 492471), (1227, 164157), (2863, 70353), (3681, 54719), (7817, 25767), (8589, 23451)]