81419715

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2729}}^1$

素因数の和:2773

約数の個数: 64

約数和(自身を含む): 165110400

約数和(自身を除く): 83690685

約数列:

[1, 3, 5, 9, 13, 15, 17, 27, 39, 45, 51, 65, 85, 117, 135, 153, 195, 221, 255, 351, 459, 585, 663, 765, 1105, 1755, 1989, 2295, 2729, 3315, 5967, 8187, 9945, 13645, 24561, 29835, 35477, 40935, 46393, 73683, 106431, 122805, 139179, 177385, 231965, 319293, 368415, 417537, 532155, 603109, 695895, 957879, 1252611, 1596465, 1809327, 2087685, 3015545, 4789395, 5427981, 6263055, 9046635, 16283943, 27139905, 81419715]

約数ペア:

[(1, 81419715), (3, 27139905), (5, 16283943), (9, 9046635), (13, 6263055), (15, 5427981), (17, 4789395), (27, 3015545), (39, 2087685), (45, 1809327), (51, 1596465), (65, 1252611), (85, 957879), (117, 695895), (135, 603109), (153, 532155), (195, 417537), (221, 368415), (255, 319293), (351, 231965), (459, 177385), (585, 139179), (663, 122805), (765, 106431), (1105, 73683), (1755, 46393), (1989, 40935), (2295, 35477), (2729, 29835), (3315, 24561), (5967, 13645), (8187, 9945)]