13921015

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:247

約数の個数: 32

約数和(自身を含む): 18892800

約数和(自身を除く): 4971785

約数列:

[1, 5, 19, 29, 31, 95, 145, 155, 163, 551, 589, 815, 899, 2755, 2945, 3097, 4495, 4727, 5053, 15485, 17081, 23635, 25265, 85405, 89813, 96007, 146537, 449065, 480035, 732685, 2784203, 13921015]

約数ペア:

[(1, 13921015), (5, 2784203), (19, 732685), (29, 480035), (31, 449065), (95, 146537), (145, 96007), (155, 89813), (163, 85405), (551, 25265), (589, 23635), (815, 17081), (899, 15485), (2755, 5053), (2945, 4727), (3097, 4495)]