20041225

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{181}}^1$

素因数の和:337

約数の個数: 24

約数和(自身を含む): 25817792

約数和(自身を除く): 5776567

約数列:

[1, 5, 25, 43, 103, 181, 215, 515, 905, 1075, 2575, 4429, 4525, 7783, 18643, 22145, 38915, 93215, 110725, 194575, 466075, 801649, 4008245, 20041225]

約数ペア:

[(1, 20041225), (5, 4008245), (25, 801649), (43, 466075), (103, 194575), (181, 110725), (215, 93215), (515, 38915), (905, 22145), (1075, 18643), (2575, 7783), (4429, 4525)]