21212115

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{32887}}^1$

素因数の和:32938

約数の個数: 16

約数和(自身を含む): 34729728

約数和(自身を除く): 13517613

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 32887, 98661, 164435, 493305, 1414141, 4242423, 7070705, 21212115]

約数ペア:

[(1, 21212115), (3, 7070705), (5, 4242423), (15, 1414141), (43, 493305), (129, 164435), (215, 98661), (645, 32887)]