21287484

素因数分解:

$2^2\times 3^2\times {\mathrm{591319}}^1$

素因数の和:591329

約数の個数: 18

約数和(自身を含む): 53810120

約数和(自身を除く): 32522636

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 591319, 1182638, 1773957, 2365276, 3547914, 5321871, 7095828, 10643742, 21287484]

約数ペア:

[(1, 21287484), (2, 10643742), (3, 7095828), (4, 5321871), (6, 3547914), (9, 2365276), (12, 1773957), (18, 1182638), (36, 591319)]