21695687

素因数分解:

${\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{251}}^1$

素因数の和:434

約数の個数: 16

約数和(自身を含む): 24060960

約数和(自身を除く): 2365273

約数列:

[1, 13, 61, 109, 251, 793, 1417, 3263, 6649, 15311, 27359, 86437, 199043, 355667, 1668899, 21695687]

約数ペア:

[(1, 21695687), (13, 1668899), (61, 355667), (109, 199043), (251, 86437), (793, 27359), (1417, 15311), (3263, 6649)]