20317264

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{241}}^1\times {\mathrm{479}}^1$

素因数の和:739

約数の個数: 40

約数和(自身を含む): 43211520

約数和(自身を除く): 22894256

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 241, 479, 482, 958, 964, 1916, 1928, 2651, 3832, 3856, 5269, 5302, 7664, 10538, 10604, 21076, 21208, 42152, 42416, 84304, 115439, 230878, 461756, 923512, 1269829, 1847024, 2539658, 5079316, 10158632, 20317264]

約数ペア:

[(1, 20317264), (2, 10158632), (4, 5079316), (8, 2539658), (11, 1847024), (16, 1269829), (22, 923512), (44, 461756), (88, 230878), (176, 115439), (241, 84304), (479, 42416), (482, 42152), (958, 21208), (964, 21076), (1916, 10604), (1928, 10538), (2651, 7664), (3832, 5302), (3856, 5269)]