123906447

素因数分解:

$3^2\times 7^2\times {\mathrm{280967}}^1$

素因数の和:280987

約数の個数: 18

約数和(自身を含む): 208197288

約数和(自身を除く): 84290841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 280967, 842901, 1966769, 2528703, 5900307, 13767383, 17700921, 41302149, 123906447]

約数ペア:

[(1, 123906447), (3, 41302149), (7, 17700921), (9, 13767383), (21, 5900307), (49, 2528703), (63, 1966769), (147, 842901), (441, 280967)]