20665554

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{5407}}^1$

素因数の和:5439

約数の個数: 48

約数和(自身を含む): 51787008

約数和(自身を除く): 31121454

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 49, 78, 91, 98, 147, 182, 273, 294, 546, 637, 1274, 1911, 3822, 5407, 10814, 16221, 32442, 37849, 70291, 75698, 113547, 140582, 210873, 227094, 264943, 421746, 492037, 529886, 794829, 984074, 1476111, 1589658, 2952222, 3444259, 6888518, 10332777, 20665554]

約数ペア:

[(1, 20665554), (2, 10332777), (3, 6888518), (6, 3444259), (7, 2952222), (13, 1589658), (14, 1476111), (21, 984074), (26, 794829), (39, 529886), (42, 492037), (49, 421746), (78, 264943), (91, 227094), (98, 210873), (147, 140582), (182, 113547), (273, 75698), (294, 70291), (546, 37849), (637, 32442), (1274, 16221), (1911, 10814), (3822, 5407)]