21311005

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1\times {\mathrm{347}}^1$

素因数の和:596

約数の個数: 16

約数和(自身を含む): 26158464

約数和(自身を除く): 4847459

約数列:

[1, 5, 71, 173, 347, 355, 865, 1735, 12283, 24637, 60031, 61415, 123185, 300155, 4262201, 21311005]

約数ペア:

[(1, 21311005), (5, 4262201), (71, 300155), (173, 123185), (347, 61415), (355, 60031), (865, 24637), (1735, 12283)]