21119864

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{49811}}^1$

素因数の和:49870

約数の個数: 16

約数和(自身を含む): 40347720

約数和(自身を除く): 19227856

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 49811, 99622, 199244, 398488, 2639983, 5279966, 10559932, 21119864]

約数ペア:

[(1, 21119864), (2, 10559932), (4, 5279966), (8, 2639983), (53, 398488), (106, 199244), (212, 99622), (424, 49811)]