20796321

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4481}}^1$

素因数の和:4521

約数の個数: 32

約数和(自身を含む): 36142848

約数和(自身を除く): 15346527

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 221, 273, 357, 663, 1547, 4481, 4641, 13443, 31367, 58253, 76177, 94101, 174759, 228531, 407771, 533239, 990301, 1223313, 1599717, 2970903, 6932107, 20796321]

約数ペア:

[(1, 20796321), (3, 6932107), (7, 2970903), (13, 1599717), (17, 1223313), (21, 990301), (39, 533239), (51, 407771), (91, 228531), (119, 174759), (221, 94101), (273, 76177), (357, 58253), (663, 31367), (1547, 13443), (4481, 4641)]