31123456

素因数分解:

$2^{11}\times 7^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1$

素因数の和:209

約数の個数: 96

約数和(自身を含む): 77051520

約数和(自身を除く): 45928064

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 91, 104, 112, 128, 167, 182, 208, 224, 256, 334, 364, 416, 448, 512, 668, 728, 832, 896, 1024, 1169, 1336, 1456, 1664, 1792, 2048, 2171, 2338, 2672, 2912, 3328, 3584, 4342, 4676, 5344, 5824, 6656, 7168, 8684, 9352, 10688, 11648, 13312, 14336, 15197, 17368, 18704, 21376, 23296, 26624, 30394, 34736, 37408, 42752, 46592, 60788, 69472, 74816, 85504, 93184, 121576, 138944, 149632, 171008, 186368, 243152, 277888, 299264, 342016, 486304, 555776, 598528, 972608, 1111552, 1197056, 1945216, 2223104, 2394112, 3890432, 4446208, 7780864, 15561728, 31123456]

約数ペア:

[(1, 31123456), (2, 15561728), (4, 7780864), (7, 4446208), (8, 3890432), (13, 2394112), (14, 2223104), (16, 1945216), (26, 1197056), (28, 1111552), (32, 972608), (52, 598528), (56, 555776), (64, 486304), (91, 342016), (104, 299264), (112, 277888), (128, 243152), (167, 186368), (182, 171008), (208, 149632), (224, 138944), (256, 121576), (334, 93184), (364, 85504), (416, 74816), (448, 69472), (512, 60788), (668, 46592), (728, 42752), (832, 37408), (896, 34736), (1024, 30394), (1169, 26624), (1336, 23296), (1456, 21376), (1664, 18704), (1792, 17368), (2048, 15197), (2171, 14336), (2338, 13312), (2672, 11648), (2912, 10688), (3328, 9352), (3584, 8684), (4342, 7168), (4676, 6656), (5344, 5824)]