81660040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{26513}}^1$

素因数の和:26542

約数の個数: 64

約数和(自身を含む): 229080960

約数和(自身を除く): 147420920

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 26513, 53026, 106052, 132565, 185591, 212104, 265130, 291643, 371182, 530260, 583286, 742364, 927955, 1060520, 1166572, 1458215, 1484728, 1855910, 2041501, 2333144, 2916430, 3711820, 4083002, 5832860, 7423640, 8166004, 10207505, 11665720, 16332008, 20415010, 40830020, 81660040]

約数ペア:

[(1, 81660040), (2, 40830020), (4, 20415010), (5, 16332008), (7, 11665720), (8, 10207505), (10, 8166004), (11, 7423640), (14, 5832860), (20, 4083002), (22, 3711820), (28, 2916430), (35, 2333144), (40, 2041501), (44, 1855910), (55, 1484728), (56, 1458215), (70, 1166572), (77, 1060520), (88, 927955), (110, 742364), (140, 583286), (154, 530260), (220, 371182), (280, 291643), (308, 265130), (385, 212104), (440, 185591), (616, 132565), (770, 106052), (1540, 53026), (3080, 26513)]