20519300

素因数分解:

$2^2\times 5^2\times {\mathrm{449}}^1\times {\mathrm{457}}^1$

素因数の和:920

約数の個数: 36

約数和(自身を含む): 44723700

約数和(自身を除く): 24204400

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 449, 457, 898, 914, 1796, 1828, 2245, 2285, 4490, 4570, 8980, 9140, 11225, 11425, 22450, 22850, 44900, 45700, 205193, 410386, 820772, 1025965, 2051930, 4103860, 5129825, 10259650, 20519300]

約数ペア:

[(1, 20519300), (2, 10259650), (4, 5129825), (5, 4103860), (10, 2051930), (20, 1025965), (25, 820772), (50, 410386), (100, 205193), (449, 45700), (457, 44900), (898, 22850), (914, 22450), (1796, 11425), (1828, 11225), (2245, 9140), (2285, 8980), (4490, 4570)]