20654895

素因数分解:

$3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{25981}}^1$

素因数の和:26042

約数の個数: 16

約数和(自身を含む): 33672672

約数和(自身を除く): 13017777

約数列:

[1, 3, 5, 15, 53, 159, 265, 795, 25981, 77943, 129905, 389715, 1376993, 4130979, 6884965, 20654895]

約数ペア:

[(1, 20654895), (3, 6884965), (5, 4130979), (15, 1376993), (53, 389715), (159, 129905), (265, 77943), (795, 25981)]