381276987

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{1571}}^1$

素因数の和:1728

約数の個数: 48

約数和(自身を含む): 642281472

約数和(自身を除く): 261004485

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 127, 147, 273, 381, 637, 889, 1571, 1651, 1911, 2667, 4713, 4953, 6223, 10997, 11557, 18669, 20423, 32991, 34671, 61269, 76979, 80899, 142961, 199517, 230937, 242697, 428883, 598551, 1000727, 1396619, 2593721, 3002181, 4189857, 7781163, 9776333, 18156047, 29328999, 54468141, 127092329, 381276987]

約数ペア:

[(1, 381276987), (3, 127092329), (7, 54468141), (13, 29328999), (21, 18156047), (39, 9776333), (49, 7781163), (91, 4189857), (127, 3002181), (147, 2593721), (273, 1396619), (381, 1000727), (637, 598551), (889, 428883), (1571, 242697), (1651, 230937), (1911, 199517), (2667, 142961), (4713, 80899), (4953, 76979), (6223, 61269), (10997, 34671), (11557, 32991), (18669, 20423)]