21878889109

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{521}}^1\times {\mathrm{4583}}^1$

素因数の和:5146

約数の個数: 48

約数和(自身を含む): 29460744576

約数和(自身を除く): 7581855467

約数列:

[1, 7, 11, 17, 49, 77, 119, 187, 521, 539, 833, 1309, 3647, 4583, 5731, 8857, 9163, 25529, 32081, 40117, 50413, 61999, 77911, 97427, 224567, 280819, 352891, 433993, 545377, 681989, 857021, 2387743, 2470237, 3817639, 4773923, 5999147, 16714201, 26265173, 40591631, 41994029, 116999407, 183856211, 284141417, 446507941, 1286993477, 1988989919, 3125555587, 21878889109]

約数ペア:

[(1, 21878889109), (7, 3125555587), (11, 1988989919), (17, 1286993477), (49, 446507941), (77, 284141417), (119, 183856211), (187, 116999407), (521, 41994029), (539, 40591631), (833, 26265173), (1309, 16714201), (3647, 5999147), (4583, 4773923), (5731, 3817639), (8857, 2470237), (9163, 2387743), (25529, 857021), (32081, 681989), (40117, 545377), (50413, 433993), (61999, 352891), (77911, 280819), (97427, 224567)]