21380366

素因数分解:

$2^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{7523}}^1$

素因数の和:7568

約数の個数: 24

約数和(自身を含む): 38598120

約数和(自身を除く): 17217754

約数列:

[1, 2, 7, 14, 29, 49, 58, 98, 203, 406, 1421, 2842, 7523, 15046, 52661, 105322, 218167, 368627, 436334, 737254, 1527169, 3054338, 10690183, 21380366]

約数ペア:

[(1, 21380366), (2, 10690183), (7, 3054338), (14, 1527169), (29, 737254), (49, 436334), (58, 368627), (98, 218167), (203, 105322), (406, 52661), (1421, 15046), (2842, 7523)]