21317085

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{10079}}^1$

素因数の和:10137

約数の個数: 24

約数和(自身を含む): 37739520

約数和(自身を除く): 16422435

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 10079, 30237, 50395, 90711, 151185, 453555, 473713, 1421139, 2368565, 4263417, 7105695, 21317085]

約数ペア:

[(1, 21317085), (3, 7105695), (5, 4263417), (9, 2368565), (15, 1421139), (45, 473713), (47, 453555), (141, 151185), (235, 90711), (423, 50395), (705, 30237), (2115, 10079)]