21225321

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{6719}}^1$

素因数の和:6747

約数の個数: 24

約数和(自身を含む): 34245120

約数和(自身を除く): 13019799

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 351, 1053, 3159, 6719, 20157, 60471, 87347, 181413, 262041, 544239, 786123, 1632717, 2358369, 7075107, 21225321]

約数ペア:

[(1, 21225321), (3, 7075107), (9, 2358369), (13, 1632717), (27, 786123), (39, 544239), (81, 262041), (117, 181413), (243, 87347), (351, 60471), (1053, 20157), (3159, 6719)]