212399721

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:462

約数の個数: 48

約数和(自身を含む): 330640128

約数和(自身を除く): 118240407

約数列:

[1, 3, 9, 37, 41, 47, 111, 123, 141, 331, 333, 369, 423, 993, 1517, 1739, 1927, 2979, 4551, 5217, 5781, 12247, 13571, 13653, 15557, 15651, 17343, 36741, 40713, 46671, 71299, 110223, 122139, 140013, 213897, 502127, 575609, 637837, 641691, 1506381, 1726827, 1913511, 4519143, 5180481, 5740533, 23599969, 70799907, 212399721]

約数ペア:

[(1, 212399721), (3, 70799907), (9, 23599969), (37, 5740533), (41, 5180481), (47, 4519143), (111, 1913511), (123, 1726827), (141, 1506381), (331, 641691), (333, 637837), (369, 575609), (423, 502127), (993, 213897), (1517, 140013), (1739, 122139), (1927, 110223), (2979, 71299), (4551, 46671), (5217, 40713), (5781, 36741), (12247, 17343), (13571, 15651), (13653, 15557)]