21521085

素因数分解:

$3^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{4111}}^1$

素因数の和:4468

約数の個数: 16

約数和(自身を含む): 34540800

約数和(自身を除く): 13019715

約数列:

[1, 3, 5, 15, 349, 1047, 1745, 4111, 5235, 12333, 20555, 61665, 1434739, 4304217, 7173695, 21521085]

約数ペア:

[(1, 21521085), (3, 7173695), (5, 4304217), (15, 1434739), (349, 61665), (1047, 20555), (1745, 12333), (4111, 5235)]