21540548

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{1039}}^1$

素因数の和:1187

約数の個数: 24

約数和(自身を含む): 38787840

約数和(自身を除く): 17247292

約数列:

[1, 2, 4, 71, 73, 142, 146, 284, 292, 1039, 2078, 4156, 5183, 10366, 20732, 73769, 75847, 147538, 151694, 295076, 303388, 5385137, 10770274, 21540548]

約数ペア:

[(1, 21540548), (2, 10770274), (4, 5385137), (71, 303388), (73, 295076), (142, 151694), (146, 147538), (284, 75847), (292, 73769), (1039, 20732), (2078, 10366), (4156, 5183)]