20621187

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{2543}}^1$

素因数の和:2619

約数の個数: 24

約数和(自身を含む): 32145984

約数和(自身を除く): 11524797

約数列:

[1, 3, 9, 17, 51, 53, 153, 159, 477, 901, 2543, 2703, 7629, 8109, 22887, 43231, 129693, 134779, 389079, 404337, 1213011, 2291243, 6873729, 20621187]

約数ペア:

[(1, 20621187), (3, 6873729), (9, 2291243), (17, 1213011), (51, 404337), (53, 389079), (153, 134779), (159, 129693), (477, 43231), (901, 22887), (2543, 8109), (2703, 7629)]