787236489

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{2909}}^1$

素因数の和:3191

約数の個数: 40

約数和(自身を含む): 1271821320

約数和(自身を除く): 484584831

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 257, 351, 771, 1053, 2313, 2909, 3341, 6939, 8727, 10023, 20817, 26181, 30069, 37817, 78543, 90207, 113451, 235629, 270621, 340353, 747613, 1021059, 2242839, 3063177, 6728517, 9718969, 20185551, 29156907, 60556653, 87470721, 262412163, 787236489]

約数ペア:

[(1, 787236489), (3, 262412163), (9, 87470721), (13, 60556653), (27, 29156907), (39, 20185551), (81, 9718969), (117, 6728517), (257, 3063177), (351, 2242839), (771, 1021059), (1053, 747613), (2313, 340353), (2909, 270621), (3341, 235629), (6939, 113451), (8727, 90207), (10023, 78543), (20817, 37817), (26181, 30069)]