20425680

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2579}}^1$

素因数の和:2609

約数の個数: 120

約数和(自身を含む): 74861280

約数和(自身を除く): 54435600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 48, 55, 60, 66, 72, 80, 88, 90, 99, 110, 120, 132, 144, 165, 176, 180, 198, 220, 240, 264, 330, 360, 396, 440, 495, 528, 660, 720, 792, 880, 990, 1320, 1584, 1980, 2579, 2640, 3960, 5158, 7737, 7920, 10316, 12895, 15474, 20632, 23211, 25790, 28369, 30948, 38685, 41264, 46422, 51580, 56738, 61896, 77370, 85107, 92844, 103160, 113476, 116055, 123792, 141845, 154740, 170214, 185688, 206320, 226952, 232110, 255321, 283690, 309480, 340428, 371376, 425535, 453904, 464220, 510642, 567380, 618960, 680856, 851070, 928440, 1021284, 1134760, 1276605, 1361712, 1702140, 1856880, 2042568, 2269520, 2553210, 3404280, 4085136, 5106420, 6808560, 10212840, 20425680]

約数ペア:

[(1, 20425680), (2, 10212840), (3, 6808560), (4, 5106420), (5, 4085136), (6, 3404280), (8, 2553210), (9, 2269520), (10, 2042568), (11, 1856880), (12, 1702140), (15, 1361712), (16, 1276605), (18, 1134760), (20, 1021284), (22, 928440), (24, 851070), (30, 680856), (33, 618960), (36, 567380), (40, 510642), (44, 464220), (45, 453904), (48, 425535), (55, 371376), (60, 340428), (66, 309480), (72, 283690), (80, 255321), (88, 232110), (90, 226952), (99, 206320), (110, 185688), (120, 170214), (132, 154740), (144, 141845), (165, 123792), (176, 116055), (180, 113476), (198, 103160), (220, 92844), (240, 85107), (264, 77370), (330, 61896), (360, 56738), (396, 51580), (440, 46422), (495, 41264), (528, 38685), (660, 30948), (720, 28369), (792, 25790), (880, 23211), (990, 20632), (1320, 15474), (1584, 12895), (1980, 10316), (2579, 7920), (2640, 7737), (3960, 5158)]