21675728

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{25561}}^1$

素因数の和:25622

約数の個数: 20

約数和(自身を含む): 42790788

約数和(自身を除く): 21115060

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 25561, 51122, 102244, 204488, 408976, 1354733, 2709466, 5418932, 10837864, 21675728]

約数ペア:

[(1, 21675728), (2, 10837864), (4, 5418932), (8, 2709466), (16, 1354733), (53, 408976), (106, 204488), (212, 102244), (424, 51122), (848, 25561)]