19442997

素因数分解:

$3^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{647}}^1$

素因数の和:719

約数の個数: 40

約数和(自身を含む): 33872256

約数和(自身を除く): 14429259

約数列:

[1, 3, 7, 9, 21, 27, 53, 63, 81, 159, 189, 371, 477, 567, 647, 1113, 1431, 1941, 3339, 4293, 4529, 5823, 10017, 13587, 17469, 30051, 34291, 40761, 52407, 102873, 122283, 240037, 308619, 366849, 720111, 925857, 2160333, 2777571, 6480999, 19442997]

約数ペア:

[(1, 19442997), (3, 6480999), (7, 2777571), (9, 2160333), (21, 925857), (27, 720111), (53, 366849), (63, 308619), (81, 240037), (159, 122283), (189, 102873), (371, 52407), (477, 40761), (567, 34291), (647, 30051), (1113, 17469), (1431, 13587), (1941, 10017), (3339, 5823), (4293, 4529)]