20689075

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{3271}}^1$

素因数の和:3315

約数の個数: 24

約数和(自身を含む): 29212416

約数和(自身を除く): 8523341

約数列:

[1, 5, 11, 23, 25, 55, 115, 253, 275, 575, 1265, 3271, 6325, 16355, 35981, 75233, 81775, 179905, 376165, 827563, 899525, 1880825, 4137815, 20689075]

約数ペア:

[(1, 20689075), (5, 4137815), (11, 1880825), (23, 899525), (25, 827563), (55, 376165), (115, 179905), (253, 81775), (275, 75233), (575, 35981), (1265, 16355), (3271, 6325)]