19721244

素因数分解:

$2^2\times 3^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{293}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 47416320

約数和(自身を除く): 27695076

約数列:

[1, 2, 3, 4, 6, 12, 71, 79, 142, 158, 213, 237, 284, 293, 316, 426, 474, 586, 852, 879, 948, 1172, 1758, 3516, 5609, 11218, 16827, 20803, 22436, 23147, 33654, 41606, 46294, 62409, 67308, 69441, 83212, 92588, 124818, 138882, 249636, 277764, 1643437, 3286874, 4930311, 6573748, 9860622, 19721244]

約数ペア:

[(1, 19721244), (2, 9860622), (3, 6573748), (4, 4930311), (6, 3286874), (12, 1643437), (71, 277764), (79, 249636), (142, 138882), (158, 124818), (213, 92588), (237, 83212), (284, 69441), (293, 67308), (316, 62409), (426, 46294), (474, 41606), (586, 33654), (852, 23147), (879, 22436), (948, 20803), (1172, 16827), (1758, 11218), (3516, 5609)]