21396018

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{509429}}^1$

素因数の和:509441

約数の個数: 16

約数和(自身を含む): 48905280

約数和(自身を除く): 27509262

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 509429, 1018858, 1528287, 3056574, 3566003, 7132006, 10698009, 21396018]

約数ペア:

[(1, 21396018), (2, 10698009), (3, 7132006), (6, 3566003), (7, 3056574), (14, 1528287), (21, 1018858), (42, 509429)]