20428317

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{24943}}^1$

素因数の和:24969

約数の個数: 24

約数和(自身を含む): 36318464

約数和(自身を除く): 15890147

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 24943, 74829, 174601, 224487, 324259, 523803, 972777, 1571409, 2269813, 2918331, 6809439, 20428317]

約数ペア:

[(1, 20428317), (3, 6809439), (7, 2918331), (9, 2269813), (13, 1571409), (21, 972777), (39, 523803), (63, 324259), (91, 224487), (117, 174601), (273, 74829), (819, 24943)]