21576411

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{439}}^1$

素因数の和:615

約数の個数: 24

約数和(自身を含む): 32215040

約数和(自身を除く): 10638629

約数列:

[1, 3, 9, 43, 127, 129, 381, 387, 439, 1143, 1317, 3951, 5461, 16383, 18877, 49149, 55753, 56631, 167259, 169893, 501777, 2397379, 7192137, 21576411]

約数ペア:

[(1, 21576411), (3, 7192137), (9, 2397379), (43, 501777), (127, 169893), (129, 167259), (381, 56631), (387, 55753), (439, 49149), (1143, 18877), (1317, 16383), (3951, 5461)]