20571912

素因数分解:

$2^3\times 3^2\times {\mathrm{285721}}^1$

素因数の和:285733

約数の個数: 24

約数和(自身を含む): 55715790

約数和(自身を除く): 35143878

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 285721, 571442, 857163, 1142884, 1714326, 2285768, 2571489, 3428652, 5142978, 6857304, 10285956, 20571912]

約数ペア:

[(1, 20571912), (2, 10285956), (3, 6857304), (4, 5142978), (6, 3428652), (8, 2571489), (9, 2285768), (12, 1714326), (18, 1142884), (24, 857163), (36, 571442), (72, 285721)]