20804563120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1289}}^1\times {\mathrm{18341}}^1$

素因数の和:19654

約数の個数: 80

約数和(自身を含む): 52811753760

約数和(自身を除く): 32007190640

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 1289, 2578, 5156, 6445, 10312, 12890, 14179, 18341, 20624, 25780, 28358, 36682, 51560, 56716, 70895, 73364, 91705, 103120, 113432, 141790, 146728, 183410, 201751, 226864, 283580, 293456, 366820, 403502, 567160, 733640, 807004, 1008755, 1134320, 1467280, 1614008, 2017510, 3228016, 4035020, 8070040, 16140080, 23641549, 47283098, 94566196, 118207745, 189132392, 236415490, 260057039, 378264784, 472830980, 520114078, 945661960, 1040228156, 1300285195, 1891323920, 2080456312, 2600570390, 4160912624, 5201140780, 10402281560, 20804563120]

約数ペア:

[(1, 20804563120), (2, 10402281560), (4, 5201140780), (5, 4160912624), (8, 2600570390), (10, 2080456312), (11, 1891323920), (16, 1300285195), (20, 1040228156), (22, 945661960), (40, 520114078), (44, 472830980), (55, 378264784), (80, 260057039), (88, 236415490), (110, 189132392), (176, 118207745), (220, 94566196), (440, 47283098), (880, 23641549), (1289, 16140080), (2578, 8070040), (5156, 4035020), (6445, 3228016), (10312, 2017510), (12890, 1614008), (14179, 1467280), (18341, 1134320), (20624, 1008755), (25780, 807004), (28358, 733640), (36682, 567160), (51560, 403502), (56716, 366820), (70895, 293456), (73364, 283580), (91705, 226864), (103120, 201751), (113432, 183410), (141790, 146728)]