638893312

素因数分解:

$2^8\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{457}}^1$

素因数の和:643

約数の個数: 72

約数和(自身を含む): 1318102016

約数和(自身を除く): 679208704

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 127, 128, 172, 254, 256, 344, 457, 508, 688, 914, 1016, 1376, 1828, 2032, 2752, 3656, 4064, 5461, 5504, 7312, 8128, 10922, 11008, 14624, 16256, 19651, 21844, 29248, 32512, 39302, 43688, 58039, 58496, 78604, 87376, 116078, 116992, 157208, 174752, 232156, 314416, 349504, 464312, 628832, 699008, 928624, 1257664, 1398016, 1857248, 2495677, 2515328, 3714496, 4991354, 5030656, 7428992, 9982708, 14857984, 19965416, 39930832, 79861664, 159723328, 319446656, 638893312]

約数ペア:

[(1, 638893312), (2, 319446656), (4, 159723328), (8, 79861664), (16, 39930832), (32, 19965416), (43, 14857984), (64, 9982708), (86, 7428992), (127, 5030656), (128, 4991354), (172, 3714496), (254, 2515328), (256, 2495677), (344, 1857248), (457, 1398016), (508, 1257664), (688, 928624), (914, 699008), (1016, 628832), (1376, 464312), (1828, 349504), (2032, 314416), (2752, 232156), (3656, 174752), (4064, 157208), (5461, 116992), (5504, 116078), (7312, 87376), (8128, 78604), (10922, 58496), (11008, 58039), (14624, 43688), (16256, 39302), (19651, 32512), (21844, 29248)]