81213776

素因数分解:

$2^4\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1459}}^1$

素因数の和:1552

約数の個数: 60

約数和(自身を含む): 185747040

約数和(自身を除く): 104533264

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 71, 98, 112, 142, 196, 284, 392, 497, 568, 784, 994, 1136, 1459, 1988, 2918, 3479, 3976, 5836, 6958, 7952, 10213, 11672, 13916, 20426, 23344, 27832, 40852, 55664, 71491, 81704, 103589, 142982, 163408, 207178, 285964, 414356, 571928, 725123, 828712, 1143856, 1450246, 1657424, 2900492, 5075861, 5800984, 10151722, 11601968, 20303444, 40606888, 81213776]

約数ペア:

[(1, 81213776), (2, 40606888), (4, 20303444), (7, 11601968), (8, 10151722), (14, 5800984), (16, 5075861), (28, 2900492), (49, 1657424), (56, 1450246), (71, 1143856), (98, 828712), (112, 725123), (142, 571928), (196, 414356), (284, 285964), (392, 207178), (497, 163408), (568, 142982), (784, 103589), (994, 81704), (1136, 71491), (1459, 55664), (1988, 40852), (2918, 27832), (3479, 23344), (3976, 20426), (5836, 13916), (6958, 11672), (7952, 10213)]