21155266

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{7019}}^1$

素因数の和:7169

約数の個数: 16

約数和(自身を含む): 34875360

約数和(自身を除く): 13720094

約数列:

[1, 2, 11, 22, 137, 274, 1507, 3014, 7019, 14038, 77209, 154418, 961603, 1923206, 10577633, 21155266]

約数ペア:

[(1, 21155266), (2, 10577633), (11, 1923206), (22, 961603), (137, 154418), (274, 77209), (1507, 14038), (3014, 7019)]