20685795

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2467}}^1$

素因数の和:2531

約数の個数: 32

約数和(自身を含む): 36486912

約数和(自身を除く): 15801117

約数列:

[1, 3, 5, 13, 15, 39, 43, 65, 129, 195, 215, 559, 645, 1677, 2467, 2795, 7401, 8385, 12335, 32071, 37005, 96213, 106081, 160355, 318243, 481065, 530405, 1379053, 1591215, 4137159, 6895265, 20685795]

約数ペア:

[(1, 20685795), (3, 6895265), (5, 4137159), (13, 1591215), (15, 1379053), (39, 530405), (43, 481065), (65, 318243), (129, 160355), (195, 106081), (215, 96213), (559, 37005), (645, 32071), (1677, 12335), (2467, 8385), (2795, 7401)]