19867420

素因数分解:

$2^2\times 5^1\times {\mathrm{193}}^1\times {\mathrm{5147}}^1$

素因数の和:5349

約数の個数: 24

約数和(自身を含む): 41945904

約数和(自身を除く): 22078484

約数列:

[1, 2, 4, 5, 10, 20, 193, 386, 772, 965, 1930, 3860, 5147, 10294, 20588, 25735, 51470, 102940, 993371, 1986742, 3973484, 4966855, 9933710, 19867420]

約数ペア:

[(1, 19867420), (2, 9933710), (4, 4966855), (5, 3973484), (10, 1986742), (20, 993371), (193, 102940), (386, 51470), (772, 25735), (965, 20588), (1930, 10294), (3860, 5147)]