21179151

素因数分解:

$3^5\times 7^1\times {\mathrm{12451}}^1$

素因数の和:12473

約数の個数: 24

約数和(自身を含む): 36260224

約数和(自身を除く): 15081073

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 12451, 37353, 87157, 112059, 261471, 336177, 784413, 1008531, 2353239, 3025593, 7059717, 21179151]

約数ペア:

[(1, 21179151), (3, 7059717), (7, 3025593), (9, 2353239), (21, 1008531), (27, 784413), (63, 336177), (81, 261471), (189, 112059), (243, 87157), (567, 37353), (1701, 12451)]