19907972

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1627}}^1$

素因数の和:1680

約数の個数: 48

約数和(自身を含む): 43760640

約数和(自身を除く): 23852668

約数列:

[1, 2, 4, 7, 14, 19, 23, 28, 38, 46, 76, 92, 133, 161, 266, 322, 437, 532, 644, 874, 1627, 1748, 3059, 3254, 6118, 6508, 11389, 12236, 22778, 30913, 37421, 45556, 61826, 74842, 123652, 149684, 216391, 261947, 432782, 523894, 710999, 865564, 1047788, 1421998, 2843996, 4976993, 9953986, 19907972]

約数ペア:

[(1, 19907972), (2, 9953986), (4, 4976993), (7, 2843996), (14, 1421998), (19, 1047788), (23, 865564), (28, 710999), (38, 523894), (46, 432782), (76, 261947), (92, 216391), (133, 149684), (161, 123652), (266, 74842), (322, 61826), (437, 45556), (532, 37421), (644, 30913), (874, 22778), (1627, 12236), (1748, 11389), (3059, 6508), (3254, 6118)]