19520277

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{241}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 33105600

約数和(自身を除く): 13585323

約数列:

[1, 3, 7, 19, 21, 29, 49, 57, 87, 133, 147, 203, 241, 399, 551, 609, 723, 931, 1421, 1653, 1687, 2793, 3857, 4263, 4579, 5061, 6989, 11571, 11809, 13737, 20967, 26999, 32053, 35427, 48923, 80997, 96159, 132791, 146769, 224371, 342461, 398373, 673113, 929537, 1027383, 2788611, 6506759, 19520277]

約数ペア:

[(1, 19520277), (3, 6506759), (7, 2788611), (19, 1027383), (21, 929537), (29, 673113), (49, 398373), (57, 342461), (87, 224371), (133, 146769), (147, 132791), (203, 96159), (241, 80997), (399, 48923), (551, 35427), (609, 32053), (723, 26999), (931, 20967), (1421, 13737), (1653, 11809), (1687, 11571), (2793, 6989), (3857, 5061), (4263, 4579)]