20626905

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{761}}^1$

素因数の和:921

約数の個数: 32

約数和(自身を含む): 35844480

約数和(自身を除く): 15217575

約数列:

[1, 3, 5, 13, 15, 39, 65, 139, 195, 417, 695, 761, 1807, 2085, 2283, 3805, 5421, 9035, 9893, 11415, 27105, 29679, 49465, 105779, 148395, 317337, 528895, 1375127, 1586685, 4125381, 6875635, 20626905]

約数ペア:

[(1, 20626905), (3, 6875635), (5, 4125381), (13, 1586685), (15, 1375127), (39, 528895), (65, 317337), (139, 148395), (195, 105779), (417, 49465), (695, 29679), (761, 27105), (1807, 11415), (2085, 9893), (2283, 9035), (3805, 5421)]