20709531

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{907}}^1$

素因数の和:1015

約数の個数: 24

約数和(自身を含む): 31162560

約数和(自身を除く): 10453029

約数列:

[1, 3, 9, 43, 59, 129, 177, 387, 531, 907, 2537, 2721, 7611, 8163, 22833, 39001, 53513, 117003, 160539, 351009, 481617, 2301059, 6903177, 20709531]

約数ペア:

[(1, 20709531), (3, 6903177), (9, 2301059), (43, 481617), (59, 351009), (129, 160539), (177, 117003), (387, 53513), (531, 39001), (907, 22833), (2537, 8163), (2721, 7611)]