19086921

素因数分解:

$3^5\times 7^3\times {\mathrm{229}}^1$

素因数の和:265

約数の個数: 48

約数和(自身を含む): 33488000

約数和(自身を除く): 14401079

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 229, 243, 343, 441, 567, 687, 1029, 1323, 1603, 1701, 2061, 3087, 3969, 4809, 6183, 9261, 11221, 11907, 14427, 18549, 27783, 33663, 43281, 55647, 78547, 83349, 100989, 129843, 235641, 302967, 389529, 706923, 908901, 2120769, 2726703, 6362307, 19086921]

約数ペア:

[(1, 19086921), (3, 6362307), (7, 2726703), (9, 2120769), (21, 908901), (27, 706923), (49, 389529), (63, 302967), (81, 235641), (147, 129843), (189, 100989), (229, 83349), (243, 78547), (343, 55647), (441, 43281), (567, 33663), (687, 27783), (1029, 18549), (1323, 14427), (1603, 11907), (1701, 11221), (2061, 9261), (3087, 6183), (3969, 4809)]