21072537

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{3203}}^1$

素因数の和:3269

約数の個数: 24

約数和(自身を含む): 32988384

約数和(自身を除く): 11915847

約数列:

[1, 3, 9, 17, 43, 51, 129, 153, 387, 731, 2193, 3203, 6579, 9609, 28827, 54451, 137729, 163353, 413187, 490059, 1239561, 2341393, 7024179, 21072537]

約数ペア:

[(1, 21072537), (3, 7024179), (9, 2341393), (17, 1239561), (43, 490059), (51, 413187), (129, 163353), (153, 137729), (387, 54451), (731, 28827), (2193, 9609), (3203, 6579)]