78721860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{187433}}^1$

素因数の和:187452

約数の個数: 48

約数和(自身を含む): 251911296

約数和(自身を除く): 173189436

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 187433, 374866, 562299, 749732, 937165, 1124598, 1312031, 1874330, 2249196, 2624062, 2811495, 3748660, 3936093, 5248124, 5622990, 6560155, 7872186, 11245980, 13120310, 15744372, 19680465, 26240620, 39360930, 78721860]

約数ペア:

[(1, 78721860), (2, 39360930), (3, 26240620), (4, 19680465), (5, 15744372), (6, 13120310), (7, 11245980), (10, 7872186), (12, 6560155), (14, 5622990), (15, 5248124), (20, 3936093), (21, 3748660), (28, 2811495), (30, 2624062), (35, 2249196), (42, 1874330), (60, 1312031), (70, 1124598), (84, 937165), (105, 749732), (140, 562299), (210, 374866), (420, 187433)]