21207579

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{1607}}^1$

素因数の和:1746

約数の個数: 16

約数和(自身を含む): 29175552

約数和(自身を除く): 7967973

約数列:

[1, 3, 53, 83, 159, 249, 1607, 4399, 4821, 13197, 85171, 133381, 255513, 400143, 7069193, 21207579]

約数ペア:

[(1, 21207579), (3, 7069193), (53, 400143), (83, 255513), (159, 133381), (249, 85171), (1607, 13197), (4399, 4821)]