19509025

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{379}}^1$

素因数の和:489

約数の個数: 24

約数和(自身を含む): 25444800

約数和(自身を除く): 5935775

約数列:

[1, 5, 25, 29, 71, 145, 355, 379, 725, 1775, 1895, 2059, 9475, 10295, 10991, 26909, 51475, 54955, 134545, 274775, 672725, 780361, 3901805, 19509025]

約数ペア:

[(1, 19509025), (5, 3901805), (25, 780361), (29, 672725), (71, 274775), (145, 134545), (355, 54955), (379, 51475), (725, 26909), (1775, 10991), (1895, 10295), (2059, 9475)]