254251647

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{521}}^1$

素因数の和:680

約数の個数: 48

約数和(自身を含む): 409657248

約数和(自身を除く): 155405601

約数列:

[1, 3, 9, 13, 39, 43, 97, 117, 129, 291, 387, 521, 559, 873, 1261, 1563, 1677, 3783, 4171, 4689, 5031, 6773, 11349, 12513, 20319, 22403, 37539, 50537, 54223, 60957, 67209, 151611, 162669, 201627, 291239, 454833, 488007, 656981, 873717, 1970943, 2173091, 2621151, 5912829, 6519273, 19557819, 28250183, 84750549, 254251647]

約数ペア:

[(1, 254251647), (3, 84750549), (9, 28250183), (13, 19557819), (39, 6519273), (43, 5912829), (97, 2621151), (117, 2173091), (129, 1970943), (291, 873717), (387, 656981), (521, 488007), (559, 454833), (873, 291239), (1261, 201627), (1563, 162669), (1677, 151611), (3783, 67209), (4171, 60957), (4689, 54223), (5031, 50537), (6773, 37539), (11349, 22403), (12513, 20319)]