21381021

素因数分解:

$3^2\times {\mathrm{503}}^1\times {\mathrm{4723}}^1$

素因数の和:5232

約数の個数: 12

約数和(自身を含む): 30951648

約数和(自身を除く): 9570627

約数列:

[1, 3, 9, 503, 1509, 4527, 4723, 14169, 42507, 2375669, 7127007, 21381021]

約数ペア:

[(1, 21381021), (3, 7127007), (9, 2375669), (503, 42507), (1509, 14169), (4527, 4723)]