19117021

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{179}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 25574400

約数和(自身を除く): 6457379

約数列:

[1, 7, 11, 19, 73, 77, 133, 179, 209, 511, 803, 1253, 1387, 1463, 1969, 3401, 5621, 9709, 13067, 13783, 15257, 23807, 37411, 91469, 106799, 143737, 248273, 261877, 1006159, 1737911, 2731003, 19117021]

約数ペア:

[(1, 19117021), (7, 2731003), (11, 1737911), (19, 1006159), (73, 261877), (77, 248273), (133, 143737), (179, 106799), (209, 91469), (511, 37411), (803, 23807), (1253, 15257), (1387, 13783), (1463, 13067), (1969, 9709), (3401, 5621)]