21309770

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{16267}}^1$

素因数の和:16405

約数の個数: 16

約数和(自身を含む): 38652768

約数和(自身を除く): 17342998

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 16267, 32534, 81335, 162670, 2130977, 4261954, 10654885, 21309770]

約数ペア:

[(1, 21309770), (2, 10654885), (5, 4261954), (10, 2130977), (131, 162670), (262, 81335), (655, 32534), (1310, 16267)]