21103047

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{7127}}^1$

素因数の和:7187

約数の個数: 24

約数和(自身を含む): 35582976

約数和(自身を除く): 14479929

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 7127, 21381, 49889, 64143, 149667, 334969, 449001, 1004907, 2344783, 3014721, 7034349, 21103047]

約数ペア:

[(1, 21103047), (3, 7034349), (7, 3014721), (9, 2344783), (21, 1004907), (47, 449001), (63, 334969), (141, 149667), (329, 64143), (423, 49889), (987, 21381), (2961, 7127)]