21328516

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{11273}}^1$

素因数の和:11331

約数の個数: 24

約数和(自身を含む): 41668704

約数和(自身を除く): 20340188

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 172, 473, 946, 1892, 11273, 22546, 45092, 124003, 248006, 484739, 496012, 969478, 1938956, 5332129, 10664258, 21328516]

約数ペア:

[(1, 21328516), (2, 10664258), (4, 5332129), (11, 1938956), (22, 969478), (43, 496012), (44, 484739), (86, 248006), (172, 124003), (473, 45092), (946, 22546), (1892, 11273)]