20778888555

素因数分解:

$3^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{193}}^1\times {\mathrm{11903}}^1$

素因数の和:12177

約数の個数: 64

約数和(自身を含む): 37689016320

約数和(自身を除く): 16910127765

約数列:

[1, 3, 5, 9, 15, 27, 45, 67, 135, 193, 201, 335, 579, 603, 965, 1005, 1737, 1809, 2895, 3015, 5211, 8685, 9045, 11903, 12931, 26055, 35709, 38793, 59515, 64655, 107127, 116379, 178545, 193965, 321381, 349137, 535635, 581895, 797501, 1606905, 1745685, 2297279, 2392503, 3987505, 6891837, 7177509, 11486395, 11962515, 20675511, 21532527, 34459185, 35887545, 62026533, 103377555, 107662635, 153917693, 310132665, 461753079, 769588465, 1385259237, 2308765395, 4155777711, 6926296185, 20778888555]

約数ペア:

[(1, 20778888555), (3, 6926296185), (5, 4155777711), (9, 2308765395), (15, 1385259237), (27, 769588465), (45, 461753079), (67, 310132665), (135, 153917693), (193, 107662635), (201, 103377555), (335, 62026533), (579, 35887545), (603, 34459185), (965, 21532527), (1005, 20675511), (1737, 11962515), (1809, 11486395), (2895, 7177509), (3015, 6891837), (5211, 3987505), (8685, 2392503), (9045, 2297279), (11903, 1745685), (12931, 1606905), (26055, 797501), (35709, 581895), (38793, 535635), (59515, 349137), (64655, 321381), (107127, 193965), (116379, 178545)]