20911155

素因数分解:

$3^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{6607}}^1$

素因数の和:6826

約数の個数: 16

約数和(自身を含む): 33621504

約数和(自身を除く): 12710349

約数列:

[1, 3, 5, 15, 211, 633, 1055, 3165, 6607, 19821, 33035, 99105, 1394077, 4182231, 6970385, 20911155]

約数ペア:

[(1, 20911155), (3, 6970385), (5, 4182231), (15, 1394077), (211, 99105), (633, 33035), (1055, 19821), (3165, 6607)]