256423888

素因数分解:

$2^4\times 7^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{397}}^1$

素因数の和:564

約数の個数: 80

約数和(自身を含む): 584327680

約数和(自身を除く): 327903792

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 73, 79, 112, 146, 158, 292, 316, 397, 511, 553, 584, 632, 794, 1022, 1106, 1168, 1264, 1588, 2044, 2212, 2779, 3176, 4088, 4424, 5558, 5767, 6352, 8176, 8848, 11116, 11534, 22232, 23068, 28981, 31363, 40369, 44464, 46136, 57962, 62726, 80738, 92272, 115924, 125452, 161476, 202867, 219541, 231848, 250904, 322952, 405734, 439082, 463696, 501808, 645904, 811468, 878164, 1622936, 1756328, 2289499, 3245872, 3512656, 4578998, 9157996, 16026493, 18315992, 32052986, 36631984, 64105972, 128211944, 256423888]

約数ペア:

[(1, 256423888), (2, 128211944), (4, 64105972), (7, 36631984), (8, 32052986), (14, 18315992), (16, 16026493), (28, 9157996), (56, 4578998), (73, 3512656), (79, 3245872), (112, 2289499), (146, 1756328), (158, 1622936), (292, 878164), (316, 811468), (397, 645904), (511, 501808), (553, 463696), (584, 439082), (632, 405734), (794, 322952), (1022, 250904), (1106, 231848), (1168, 219541), (1264, 202867), (1588, 161476), (2044, 125452), (2212, 115924), (2779, 92272), (3176, 80738), (4088, 62726), (4424, 57962), (5558, 46136), (5767, 44464), (6352, 40369), (8176, 31363), (8848, 28981), (11116, 23068), (11534, 22232)]