21538503

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{11789}}^1$

素因数の和:11831

約数の個数: 24

約数和(自身を含む): 36784800

約数和(自身を除く): 15246297

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 11789, 35367, 82523, 106101, 247569, 341881, 742707, 1025643, 2393167, 3076929, 7179501, 21538503]

約数ペア:

[(1, 21538503), (3, 7179501), (7, 3076929), (9, 2393167), (21, 1025643), (29, 742707), (63, 341881), (87, 247569), (203, 106101), (261, 82523), (609, 35367), (1827, 11789)]