20909119

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{383}}^1\times {\mathrm{709}}^1$

素因数の和:1110

約数の個数: 16

約数和(自身を含む): 26173440

約数和(自身を除く): 5264321

約数列:

[1, 7, 11, 77, 383, 709, 2681, 4213, 4963, 7799, 29491, 54593, 271547, 1900829, 2987017, 20909119]

約数ペア:

[(1, 20909119), (7, 2987017), (11, 1900829), (77, 271547), (383, 54593), (709, 29491), (2681, 7799), (4213, 4963)]