21071823

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{1571}}^1$

素因数の和:1854

約数の個数: 16

約数和(自身を含む): 29880576

約数和(自身を除く): 8808753

約数列:

[1, 3, 17, 51, 263, 789, 1571, 4471, 4713, 13413, 26707, 80121, 413173, 1239519, 7023941, 21071823]

約数ペア:

[(1, 21071823), (3, 7023941), (17, 1239519), (51, 413173), (263, 80121), (789, 26707), (1571, 13413), (4471, 4713)]