20931405

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{126857}}^1$

素因数の和:126876

約数の個数: 16

約数和(自身を含む): 36535104

約数和(自身を除く): 15603699

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 126857, 380571, 634285, 1395427, 1902855, 4186281, 6977135, 20931405]

約数ペア:

[(1, 20931405), (3, 6977135), (5, 4186281), (11, 1902855), (15, 1395427), (33, 634285), (55, 380571), (165, 126857)]