21440342

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19889}}^1$

素因数の和:19916

約数の個数: 24

約数和(自身を含む): 40814280

約数和(自身を除く): 19373938

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 154, 539, 1078, 19889, 39778, 139223, 218779, 278446, 437558, 974561, 1531453, 1949122, 3062906, 10720171, 21440342]

約数ペア:

[(1, 21440342), (2, 10720171), (7, 3062906), (11, 1949122), (14, 1531453), (22, 974561), (49, 437558), (77, 278446), (98, 218779), (154, 139223), (539, 39778), (1078, 19889)]