20215405

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{12289}}^1$

素因数の和:12348

約数の個数: 16

約数和(自身を含む): 28316160

約数和(自身を除く): 8100755

約数列:

[1, 5, 7, 35, 47, 235, 329, 1645, 12289, 61445, 86023, 430115, 577583, 2887915, 4043081, 20215405]

約数ペア:

[(1, 20215405), (5, 4043081), (7, 2887915), (35, 577583), (47, 430115), (235, 86023), (329, 61445), (1645, 12289)]