254928128

素因数分解:

$2^8\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{353}}^1$

素因数の和:420

約数の個数: 144

約数和(自身を含む): 648324096

約数和(自身を除く): 393395968

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 31, 32, 52, 56, 62, 64, 91, 104, 112, 124, 128, 182, 208, 217, 224, 248, 256, 353, 364, 403, 416, 434, 448, 496, 706, 728, 806, 832, 868, 896, 992, 1412, 1456, 1612, 1664, 1736, 1792, 1984, 2471, 2821, 2824, 2912, 3224, 3328, 3472, 3968, 4589, 4942, 5642, 5648, 5824, 6448, 6944, 7936, 9178, 9884, 10943, 11284, 11296, 11648, 12896, 13888, 18356, 19768, 21886, 22568, 22592, 23296, 25792, 27776, 32123, 36712, 39536, 43772, 45136, 45184, 51584, 55552, 64246, 73424, 76601, 79072, 87544, 90272, 90368, 103168, 128492, 142259, 146848, 153202, 158144, 175088, 180544, 256984, 284518, 293696, 306404, 316288, 350176, 361088, 513968, 569036, 587392, 612808, 632576, 700352, 722176, 995813, 1027936, 1138072, 1174784, 1225616, 1400704, 1991626, 2055872, 2276144, 2451232, 2801408, 3983252, 4111744, 4552288, 4902464, 7966504, 8223488, 9104576, 9804928, 15933008, 18209152, 19609856, 31866016, 36418304, 63732032, 127464064, 254928128]

約数ペア:

[(1, 254928128), (2, 127464064), (4, 63732032), (7, 36418304), (8, 31866016), (13, 19609856), (14, 18209152), (16, 15933008), (26, 9804928), (28, 9104576), (31, 8223488), (32, 7966504), (52, 4902464), (56, 4552288), (62, 4111744), (64, 3983252), (91, 2801408), (104, 2451232), (112, 2276144), (124, 2055872), (128, 1991626), (182, 1400704), (208, 1225616), (217, 1174784), (224, 1138072), (248, 1027936), (256, 995813), (353, 722176), (364, 700352), (403, 632576), (416, 612808), (434, 587392), (448, 569036), (496, 513968), (706, 361088), (728, 350176), (806, 316288), (832, 306404), (868, 293696), (896, 284518), (992, 256984), (1412, 180544), (1456, 175088), (1612, 158144), (1664, 153202), (1736, 146848), (1792, 142259), (1984, 128492), (2471, 103168), (2821, 90368), (2824, 90272), (2912, 87544), (3224, 79072), (3328, 76601), (3472, 73424), (3968, 64246), (4589, 55552), (4942, 51584), (5642, 45184), (5648, 45136), (5824, 43772), (6448, 39536), (6944, 36712), (7936, 32123), (9178, 27776), (9884, 25792), (10943, 23296), (11284, 22592), (11296, 22568), (11648, 21886), (12896, 19768), (13888, 18356)]