15520813

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1$

素因数の和:273

約数の個数: 32

約数和(自身を含む): 20901888

約数和(自身を除く): 5381075

約数列:

[1, 7, 11, 17, 71, 77, 119, 167, 187, 497, 781, 1169, 1207, 1309, 1837, 2839, 5467, 8449, 11857, 12859, 13277, 19873, 31229, 82999, 92939, 130427, 201569, 218603, 912989, 1410983, 2217259, 15520813]

約数ペア:

[(1, 15520813), (7, 2217259), (11, 1410983), (17, 912989), (71, 218603), (77, 201569), (119, 130427), (167, 92939), (187, 82999), (497, 31229), (781, 19873), (1169, 13277), (1207, 12859), (1309, 11857), (1837, 8449), (2839, 5467)]