20805519025

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{311}}^1\times {\mathrm{2333}}^1$

素因数の和:2722

約数の個数: 48

約数和(自身を含む): 27450528768

約数和(自身を除く): 6645009743

約数列:

[1, 5, 25, 31, 37, 155, 185, 311, 775, 925, 1147, 1555, 2333, 5735, 7775, 9641, 11507, 11665, 28675, 48205, 57535, 58325, 72323, 86321, 241025, 287675, 356717, 361615, 431605, 725563, 1783585, 1808075, 2158025, 2675951, 3627815, 8917925, 13379755, 18139075, 22492453, 26845831, 66898775, 112462265, 134229155, 562311325, 671145775, 832220761, 4161103805, 20805519025]

約数ペア:

[(1, 20805519025), (5, 4161103805), (25, 832220761), (31, 671145775), (37, 562311325), (155, 134229155), (185, 112462265), (311, 66898775), (775, 26845831), (925, 22492453), (1147, 18139075), (1555, 13379755), (2333, 8917925), (5735, 3627815), (7775, 2675951), (9641, 2158025), (11507, 1808075), (11665, 1783585), (28675, 725563), (48205, 431605), (57535, 361615), (58325, 356717), (72323, 287675), (86321, 241025)]