21518266

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139729}}^1$

素因数の和:139749

約数の個数: 16

約数和(自身を含む): 40242240

約数和(自身を除く): 18723974

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 139729, 279458, 978103, 1537019, 1956206, 3074038, 10759133, 21518266]

約数ペア:

[(1, 21518266), (2, 10759133), (7, 3074038), (11, 1956206), (14, 1537019), (22, 978103), (77, 279458), (154, 139729)]