28009520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{4547}}^1$

素因数の和:4578

約数の個数: 80

約数和(自身を含む): 81209088

約数和(自身を除く): 53199568

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 4547, 6160, 9094, 18188, 22735, 31829, 36376, 45470, 50017, 63658, 72752, 90940, 100034, 127316, 159145, 181880, 200068, 250085, 254632, 318290, 350119, 363760, 400136, 500170, 509264, 636580, 700238, 800272, 1000340, 1273160, 1400476, 1750595, 2000680, 2546320, 2800952, 3501190, 4001360, 5601904, 7002380, 14004760, 28009520]

約数ペア:

[(1, 28009520), (2, 14004760), (4, 7002380), (5, 5601904), (7, 4001360), (8, 3501190), (10, 2800952), (11, 2546320), (14, 2000680), (16, 1750595), (20, 1400476), (22, 1273160), (28, 1000340), (35, 800272), (40, 700238), (44, 636580), (55, 509264), (56, 500170), (70, 400136), (77, 363760), (80, 350119), (88, 318290), (110, 254632), (112, 250085), (140, 200068), (154, 181880), (176, 159145), (220, 127316), (280, 100034), (308, 90940), (385, 72752), (440, 63658), (560, 50017), (616, 45470), (770, 36376), (880, 31829), (1232, 22735), (1540, 18188), (3080, 9094), (4547, 6160)]