20515694992

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1\times {\mathrm{2969}}^1$

素因数の和:3368

約数の個数: 80

約数和(自身を含む): 43309728000

約数和(自身を除く): 22794033008

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 139, 208, 239, 278, 478, 556, 956, 1112, 1807, 1912, 2224, 2969, 3107, 3614, 3824, 5938, 6214, 7228, 11876, 12428, 14456, 23752, 24856, 28912, 33221, 38597, 47504, 49712, 66442, 77194, 132884, 154388, 265768, 308776, 412691, 431873, 531536, 617552, 709591, 825382, 863746, 1419182, 1650764, 1727492, 2838364, 3301528, 3454984, 5364983, 5676728, 6603056, 6909968, 9224683, 10729966, 11353456, 18449366, 21459932, 36898732, 42919864, 73797464, 85839728, 98633149, 147594928, 197266298, 394532596, 789065192, 1282230937, 1578130384, 2564461874, 5128923748, 10257847496, 20515694992]

約数ペア:

[(1, 20515694992), (2, 10257847496), (4, 5128923748), (8, 2564461874), (13, 1578130384), (16, 1282230937), (26, 789065192), (52, 394532596), (104, 197266298), (139, 147594928), (208, 98633149), (239, 85839728), (278, 73797464), (478, 42919864), (556, 36898732), (956, 21459932), (1112, 18449366), (1807, 11353456), (1912, 10729966), (2224, 9224683), (2969, 6909968), (3107, 6603056), (3614, 5676728), (3824, 5364983), (5938, 3454984), (6214, 3301528), (7228, 2838364), (11876, 1727492), (12428, 1650764), (14456, 1419182), (23752, 863746), (24856, 825382), (28912, 709591), (33221, 617552), (38597, 531536), (47504, 431873), (49712, 412691), (66442, 308776), (77194, 265768), (132884, 154388)]