20804388880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{28111}}^1$

素因数の和:28193

約数の個数: 120

約数和(自身を含む): 54651752064

約数和(自身を除く): 33847363184

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 40, 44, 55, 58, 80, 88, 110, 116, 145, 176, 220, 232, 290, 319, 440, 464, 580, 638, 841, 880, 1160, 1276, 1595, 1682, 2320, 2552, 3190, 3364, 4205, 5104, 6380, 6728, 8410, 9251, 12760, 13456, 16820, 18502, 25520, 28111, 33640, 37004, 46255, 56222, 67280, 74008, 92510, 112444, 140555, 148016, 185020, 224888, 281110, 309221, 370040, 449776, 562220, 618442, 740080, 815219, 1124440, 1236884, 1546105, 1630438, 2248880, 2473768, 3092210, 3260876, 4076095, 4947536, 6184420, 6521752, 8152190, 8967409, 12368840, 13043504, 16304380, 17934818, 23641351, 24737680, 32608760, 35869636, 44837045, 47282702, 65217520, 71739272, 89674090, 94565404, 118206755, 143478544, 179348180, 189130808, 236413510, 260054861, 358696360, 378261616, 472827020, 520109722, 717392720, 945654040, 1040219444, 1300274305, 1891308080, 2080438888, 2600548610, 4160877776, 5201097220, 10402194440, 20804388880]

約数ペア:

[(1, 20804388880), (2, 10402194440), (4, 5201097220), (5, 4160877776), (8, 2600548610), (10, 2080438888), (11, 1891308080), (16, 1300274305), (20, 1040219444), (22, 945654040), (29, 717392720), (40, 520109722), (44, 472827020), (55, 378261616), (58, 358696360), (80, 260054861), (88, 236413510), (110, 189130808), (116, 179348180), (145, 143478544), (176, 118206755), (220, 94565404), (232, 89674090), (290, 71739272), (319, 65217520), (440, 47282702), (464, 44837045), (580, 35869636), (638, 32608760), (841, 24737680), (880, 23641351), (1160, 17934818), (1276, 16304380), (1595, 13043504), (1682, 12368840), (2320, 8967409), (2552, 8152190), (3190, 6521752), (3364, 6184420), (4205, 4947536), (5104, 4076095), (6380, 3260876), (6728, 3092210), (8410, 2473768), (9251, 2248880), (12760, 1630438), (13456, 1546105), (16820, 1236884), (18502, 1124440), (25520, 815219), (28111, 740080), (33640, 618442), (37004, 562220), (46255, 449776), (56222, 370040), (67280, 309221), (74008, 281110), (92510, 224888), (112444, 185020), (140555, 148016)]