20425923

素因数分解:

$3^2\times 7^1\times {\mathrm{349}}^1\times {\mathrm{929}}^1$

素因数の和:1291

約数の個数: 24

約数和(自身を含む): 33852000

約数和(自身を除く): 13426077

約数列:

[1, 3, 7, 9, 21, 63, 349, 929, 1047, 2443, 2787, 3141, 6503, 7329, 8361, 19509, 21987, 58527, 324221, 972663, 2269547, 2917989, 6808641, 20425923]

約数ペア:

[(1, 20425923), (3, 6808641), (7, 2917989), (9, 2269547), (21, 972663), (63, 324221), (349, 58527), (929, 21987), (1047, 19509), (2443, 8361), (2787, 7329), (3141, 6503)]