20016549

素因数分解:

$3^2\times 7^2\times {\mathrm{45389}}^1$

素因数の和:45409

約数の個数: 18

約数和(自身を含む): 33633990

約数和(自身を除く): 13617441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 45389, 136167, 317723, 408501, 953169, 2224061, 2859507, 6672183, 20016549]

約数ペア:

[(1, 20016549), (3, 6672183), (7, 2859507), (9, 2224061), (21, 953169), (49, 408501), (63, 317723), (147, 136167), (441, 45389)]