21000949008

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1085657}}^1$

素因数の和:1085712

約数の個数: 80

約数和(自身を含む): 60310473216

約数和(自身を除く): 39309524208

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 31, 39, 48, 52, 62, 78, 93, 104, 124, 156, 186, 208, 248, 312, 372, 403, 496, 624, 744, 806, 1209, 1488, 1612, 2418, 3224, 4836, 6448, 9672, 19344, 1085657, 2171314, 3256971, 4342628, 6513942, 8685256, 13027884, 14113541, 17370512, 26055768, 28227082, 33655367, 42340623, 52111536, 56454164, 67310734, 84681246, 100966101, 112908328, 134621468, 169362492, 201932202, 225816656, 269242936, 338724984, 403864404, 437519771, 538485872, 677449968, 807728808, 875039542, 1312559313, 1615457616, 1750079084, 2625118626, 3500158168, 5250237252, 7000316336, 10500474504, 21000949008]

約数ペア:

[(1, 21000949008), (2, 10500474504), (3, 7000316336), (4, 5250237252), (6, 3500158168), (8, 2625118626), (12, 1750079084), (13, 1615457616), (16, 1312559313), (24, 875039542), (26, 807728808), (31, 677449968), (39, 538485872), (48, 437519771), (52, 403864404), (62, 338724984), (78, 269242936), (93, 225816656), (104, 201932202), (124, 169362492), (156, 134621468), (186, 112908328), (208, 100966101), (248, 84681246), (312, 67310734), (372, 56454164), (403, 52111536), (496, 42340623), (624, 33655367), (744, 28227082), (806, 26055768), (1209, 17370512), (1488, 14113541), (1612, 13027884), (2418, 8685256), (3224, 6513942), (4836, 4342628), (6448, 3256971), (9672, 2171314), (19344, 1085657)]