81821796

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{977}}^1\times {\mathrm{997}}^1$

素因数の和:1988

約数の個数: 48

約数和(自身を含む): 218633856

約数和(自身を除く): 136812060

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 977, 997, 1954, 1994, 2931, 2991, 3908, 3988, 5862, 5982, 6839, 6979, 11724, 11964, 13678, 13958, 20517, 20937, 27356, 27916, 41034, 41874, 82068, 83748, 974069, 1948138, 2922207, 3896276, 5844414, 6818483, 11688828, 13636966, 20455449, 27273932, 40910898, 81821796]

約数ペア:

[(1, 81821796), (2, 40910898), (3, 27273932), (4, 20455449), (6, 13636966), (7, 11688828), (12, 6818483), (14, 5844414), (21, 3896276), (28, 2922207), (42, 1948138), (84, 974069), (977, 83748), (997, 82068), (1954, 41874), (1994, 41034), (2931, 27916), (2991, 27356), (3908, 20937), (3988, 20517), (5862, 13958), (5982, 13678), (6839, 11964), (6979, 11724)]