13872155

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{811}}^1$

素因数の和:1138

約数の個数: 16

約数和(自身を含む): 18240768

約数和(自身を除く): 4368613

約数列:

[1, 5, 11, 55, 311, 811, 1555, 3421, 4055, 8921, 17105, 44605, 252221, 1261105, 2774431, 13872155]

約数ペア:

[(1, 13872155), (5, 2774431), (11, 1261105), (55, 252221), (311, 44605), (811, 17105), (1555, 8921), (3421, 4055)]