208128256

素因数分解:

$2^8\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:176

約数の個数: 144

約数和(自身を含む): 505800064

約数和(自身を除く): 297671808

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 37, 43, 56, 64, 73, 74, 86, 112, 128, 146, 148, 172, 224, 256, 259, 292, 296, 301, 344, 448, 511, 518, 584, 592, 602, 688, 896, 1022, 1036, 1168, 1184, 1204, 1376, 1591, 1792, 2044, 2072, 2336, 2368, 2408, 2701, 2752, 3139, 3182, 4088, 4144, 4672, 4736, 4816, 5402, 5504, 6278, 6364, 8176, 8288, 9344, 9472, 9632, 10804, 11008, 11137, 12556, 12728, 16352, 16576, 18688, 18907, 19264, 21608, 21973, 22274, 25112, 25456, 32704, 33152, 37814, 38528, 43216, 43946, 44548, 50224, 50912, 65408, 66304, 75628, 77056, 86432, 87892, 89096, 100448, 101824, 116143, 130816, 151256, 172864, 175784, 178192, 200896, 203648, 232286, 302512, 345728, 351568, 356384, 401792, 407296, 464572, 605024, 691456, 703136, 712768, 803584, 813001, 929144, 1210048, 1406272, 1425536, 1626002, 1858288, 2420096, 2812544, 2851072, 3252004, 3716576, 4840192, 5625088, 6504008, 7433152, 13008016, 14866304, 26016032, 29732608, 52032064, 104064128, 208128256]

約数ペア:

[(1, 208128256), (2, 104064128), (4, 52032064), (7, 29732608), (8, 26016032), (14, 14866304), (16, 13008016), (28, 7433152), (32, 6504008), (37, 5625088), (43, 4840192), (56, 3716576), (64, 3252004), (73, 2851072), (74, 2812544), (86, 2420096), (112, 1858288), (128, 1626002), (146, 1425536), (148, 1406272), (172, 1210048), (224, 929144), (256, 813001), (259, 803584), (292, 712768), (296, 703136), (301, 691456), (344, 605024), (448, 464572), (511, 407296), (518, 401792), (584, 356384), (592, 351568), (602, 345728), (688, 302512), (896, 232286), (1022, 203648), (1036, 200896), (1168, 178192), (1184, 175784), (1204, 172864), (1376, 151256), (1591, 130816), (1792, 116143), (2044, 101824), (2072, 100448), (2336, 89096), (2368, 87892), (2408, 86432), (2701, 77056), (2752, 75628), (3139, 66304), (3182, 65408), (4088, 50912), (4144, 50224), (4672, 44548), (4736, 43946), (4816, 43216), (5402, 38528), (5504, 37814), (6278, 33152), (6364, 32704), (8176, 25456), (8288, 25112), (9344, 22274), (9472, 21973), (9632, 21608), (10804, 19264), (11008, 18907), (11137, 18688), (12556, 16576), (12728, 16352)]