21289850

素因数分解:

$2^1\times 5^2\times {\mathrm{263}}^1\times {\mathrm{1619}}^1$

素因数の和:1894

約数の個数: 24

約数和(自身を含む): 39774240

約数和(自身を除く): 18484390

約数列:

[1, 2, 5, 10, 25, 50, 263, 526, 1315, 1619, 2630, 3238, 6575, 8095, 13150, 16190, 40475, 80950, 425797, 851594, 2128985, 4257970, 10644925, 21289850]

約数ペア:

[(1, 21289850), (2, 10644925), (5, 4257970), (10, 2128985), (25, 851594), (50, 425797), (263, 80950), (526, 40475), (1315, 16190), (1619, 13150), (2630, 8095), (3238, 6575)]