19660288

素因数分解:

$2^9\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:127

約数の個数: 80

約数和(自身を含む): 43211520

約数和(自身を除く): 23551232

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 43, 47, 64, 76, 86, 94, 128, 152, 172, 188, 256, 304, 344, 376, 512, 608, 688, 752, 817, 893, 1216, 1376, 1504, 1634, 1786, 2021, 2432, 2752, 3008, 3268, 3572, 4042, 4864, 5504, 6016, 6536, 7144, 8084, 9728, 11008, 12032, 13072, 14288, 16168, 22016, 24064, 26144, 28576, 32336, 38399, 52288, 57152, 64672, 76798, 104576, 114304, 129344, 153596, 209152, 228608, 258688, 307192, 418304, 457216, 517376, 614384, 1034752, 1228768, 2457536, 4915072, 9830144, 19660288]

約数ペア:

[(1, 19660288), (2, 9830144), (4, 4915072), (8, 2457536), (16, 1228768), (19, 1034752), (32, 614384), (38, 517376), (43, 457216), (47, 418304), (64, 307192), (76, 258688), (86, 228608), (94, 209152), (128, 153596), (152, 129344), (172, 114304), (188, 104576), (256, 76798), (304, 64672), (344, 57152), (376, 52288), (512, 38399), (608, 32336), (688, 28576), (752, 26144), (817, 24064), (893, 22016), (1216, 16168), (1376, 14288), (1504, 13072), (1634, 12032), (1786, 11008), (2021, 9728), (2432, 8084), (2752, 7144), (3008, 6536), (3268, 6016), (3572, 5504), (4042, 4864)]