20699588

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1$

素因数の和:157

約数の個数: 96

約数和(自身を含む): 48733440

約数和(自身を除く): 28033852

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 41, 52, 73, 76, 82, 91, 133, 146, 164, 182, 247, 266, 287, 292, 364, 494, 511, 532, 533, 574, 779, 949, 988, 1022, 1066, 1148, 1387, 1558, 1729, 1898, 2044, 2132, 2774, 2993, 3116, 3458, 3731, 3796, 5453, 5548, 5986, 6643, 6916, 7462, 9709, 10127, 10906, 11972, 13286, 14924, 18031, 19418, 20254, 20951, 21812, 26572, 36062, 38836, 38909, 40508, 41902, 56867, 70889, 72124, 77818, 83804, 113734, 126217, 141778, 155636, 227468, 252434, 272363, 283556, 398069, 504868, 544726, 739271, 796138, 1089452, 1478542, 1592276, 2957084, 5174897, 10349794, 20699588]

約数ペア:

[(1, 20699588), (2, 10349794), (4, 5174897), (7, 2957084), (13, 1592276), (14, 1478542), (19, 1089452), (26, 796138), (28, 739271), (38, 544726), (41, 504868), (52, 398069), (73, 283556), (76, 272363), (82, 252434), (91, 227468), (133, 155636), (146, 141778), (164, 126217), (182, 113734), (247, 83804), (266, 77818), (287, 72124), (292, 70889), (364, 56867), (494, 41902), (511, 40508), (532, 38909), (533, 38836), (574, 36062), (779, 26572), (949, 21812), (988, 20951), (1022, 20254), (1066, 19418), (1148, 18031), (1387, 14924), (1558, 13286), (1729, 11972), (1898, 10906), (2044, 10127), (2132, 9709), (2774, 7462), (2993, 6916), (3116, 6643), (3458, 5986), (3731, 5548), (3796, 5453)]