18991938

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{41}}^2\times {\mathrm{269}}^1$

素因数の和:363

約数の個数: 48

約数和(自身を含む): 44660160

約数和(自身を除く): 25668222

約数列:

[1, 2, 3, 6, 7, 14, 21, 41, 42, 82, 123, 246, 269, 287, 538, 574, 807, 861, 1614, 1681, 1722, 1883, 3362, 3766, 5043, 5649, 10086, 11029, 11298, 11767, 22058, 23534, 33087, 35301, 66174, 70602, 77203, 154406, 231609, 452189, 463218, 904378, 1356567, 2713134, 3165323, 6330646, 9495969, 18991938]

約数ペア:

[(1, 18991938), (2, 9495969), (3, 6330646), (6, 3165323), (7, 2713134), (14, 1356567), (21, 904378), (41, 463218), (42, 452189), (82, 231609), (123, 154406), (246, 77203), (269, 70602), (287, 66174), (538, 35301), (574, 33087), (807, 23534), (861, 22058), (1614, 11767), (1681, 11298), (1722, 11029), (1883, 10086), (3362, 5649), (3766, 5043)]