21635405

素因数分解:

$5^1\times {\mathrm{11}}^3\times {\mathrm{3251}}^1$

素因数の和:3289

約数の個数: 16

約数和(自身を含む): 28565568

約数和(自身を除く): 6930163

約数列:

[1, 5, 11, 55, 121, 605, 1331, 3251, 6655, 16255, 35761, 178805, 393371, 1966855, 4327081, 21635405]

約数ペア:

[(1, 21635405), (5, 4327081), (11, 1966855), (55, 393371), (121, 178805), (605, 35761), (1331, 16255), (3251, 6655)]