21325315

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{20407}}^1$

素因数の和:20442

約数の個数: 16

約数和(自身を含む): 29387520

約数和(自身を除く): 8062205

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 20407, 102035, 224477, 387733, 1122385, 1938665, 4265063, 21325315]

約数ペア:

[(1, 21325315), (5, 4265063), (11, 1938665), (19, 1122385), (55, 387733), (95, 224477), (209, 102035), (1045, 20407)]