21971166

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{4889}}^1$

素因数の和:5008

約数の個数: 32

約数和(自身を含む): 50699520

約数和(自身を除く): 28728354

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 107, 214, 321, 642, 749, 1498, 2247, 4494, 4889, 9778, 14667, 29334, 34223, 68446, 102669, 205338, 523123, 1046246, 1569369, 3138738, 3661861, 7323722, 10985583, 21971166]

約数ペア:

[(1, 21971166), (2, 10985583), (3, 7323722), (6, 3661861), (7, 3138738), (14, 1569369), (21, 1046246), (42, 523123), (107, 205338), (214, 102669), (321, 68446), (642, 34223), (749, 29334), (1498, 14667), (2247, 9778), (4494, 4889)]