21490238

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139547}}^1$

素因数の和:139567

約数の個数: 16

約数和(自身を含む): 40189824

約数和(自身を除く): 18699586

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 139547, 279094, 976829, 1535017, 1953658, 3070034, 10745119, 21490238]

約数ペア:

[(1, 21490238), (2, 10745119), (7, 3070034), (11, 1953658), (14, 1535017), (22, 976829), (77, 279094), (154, 139547)]