21293433

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{17789}}^1$

素因数の和:17821

約数の個数: 24

約数和(自身を含む): 37003200

約数和(自身を除く): 15709767

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 17789, 53367, 124523, 160101, 337991, 373569, 1013973, 1120707, 2365937, 3041919, 7097811, 21293433]

約数ペア:

[(1, 21293433), (3, 7097811), (7, 3041919), (9, 2365937), (19, 1120707), (21, 1013973), (57, 373569), (63, 337991), (133, 160101), (171, 124523), (399, 53367), (1197, 17789)]