21381243

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{3169}}^1$

素因数の和:3358

約数の個数: 16

約数和(自身を含む): 30888480

約数和(自身を除く): 9507237

約数列:

[1, 3, 13, 39, 173, 519, 2249, 3169, 6747, 9507, 41197, 123591, 548237, 1644711, 7127081, 21381243]

約数ペア:

[(1, 21381243), (3, 7127081), (13, 1644711), (39, 548237), (173, 123591), (519, 41197), (2249, 9507), (3169, 6747)]