21140405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29567}}^1$

素因数の和:29596

約数の個数: 16

約数和(自身を含む): 29804544

約数和(自身を除く): 8664139

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 29567, 147835, 325237, 384371, 1626185, 1921855, 4228081, 21140405]

約数ペア:

[(1, 21140405), (5, 4228081), (11, 1921855), (13, 1626185), (55, 384371), (65, 325237), (143, 147835), (715, 29567)]