21043496

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{64157}}^1$

素因数の和:64204

約数の個数: 16

約数和(自身を含む): 40419540

約数和(自身を除く): 19376044

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 64157, 128314, 256628, 513256, 2630437, 5260874, 10521748, 21043496]

約数ペア:

[(1, 21043496), (2, 10521748), (4, 5260874), (8, 2630437), (41, 513256), (82, 256628), (164, 128314), (328, 64157)]