20508895

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{109}}^1\times {\mathrm{311}}^1$

素因数の和:447

約数の個数: 24

約数和(自身を含む): 27387360

約数和(自身を除く): 6878465

約数列:

[1, 5, 11, 55, 109, 121, 311, 545, 605, 1199, 1555, 3421, 5995, 13189, 17105, 33899, 37631, 65945, 169495, 188155, 372889, 1864445, 4101779, 20508895]

約数ペア:

[(1, 20508895), (5, 4101779), (11, 1864445), (55, 372889), (109, 188155), (121, 169495), (311, 65945), (545, 37631), (605, 33899), (1199, 17105), (1555, 13189), (3421, 5995)]