20609008

素因数分解:

$2^4\times 7^2\times {\mathrm{97}}^1\times {\mathrm{271}}^1$

素因数の和:390

約数の個数: 60

約数和(自身を含む): 47101152

約数和(自身を除く): 26492144

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 97, 98, 112, 194, 196, 271, 388, 392, 542, 679, 776, 784, 1084, 1358, 1552, 1897, 2168, 2716, 3794, 4336, 4753, 5432, 7588, 9506, 10864, 13279, 15176, 19012, 26287, 26558, 30352, 38024, 52574, 53116, 76048, 105148, 106232, 184009, 210296, 212464, 368018, 420592, 736036, 1288063, 1472072, 2576126, 2944144, 5152252, 10304504, 20609008]

約数ペア:

[(1, 20609008), (2, 10304504), (4, 5152252), (7, 2944144), (8, 2576126), (14, 1472072), (16, 1288063), (28, 736036), (49, 420592), (56, 368018), (97, 212464), (98, 210296), (112, 184009), (194, 106232), (196, 105148), (271, 76048), (388, 53116), (392, 52574), (542, 38024), (679, 30352), (776, 26558), (784, 26287), (1084, 19012), (1358, 15176), (1552, 13279), (1897, 10864), (2168, 9506), (2716, 7588), (3794, 5432), (4336, 4753)]