20197905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{14797}}^1$

素因数の和:14825

約数の個数: 32

約数和(自身を含む): 39777024

約数和(自身を除く): 19579119

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 455, 1365, 14797, 44391, 73985, 103579, 192361, 221955, 310737, 517895, 577083, 961805, 1346527, 1553685, 2885415, 4039581, 6732635, 20197905]

約数ペア:

[(1, 20197905), (3, 6732635), (5, 4039581), (7, 2885415), (13, 1553685), (15, 1346527), (21, 961805), (35, 577083), (39, 517895), (65, 310737), (91, 221955), (105, 192361), (195, 103579), (273, 73985), (455, 44391), (1365, 14797)]