21451788

素因数分解:

$2^2\times 3^2\times {\mathrm{107}}^1\times {\mathrm{5569}}^1$

素因数の和:5686

約数の個数: 36

約数和(自身を含む): 54741960

約数和(自身を除く): 33290172

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 107, 214, 321, 428, 642, 963, 1284, 1926, 3852, 5569, 11138, 16707, 22276, 33414, 50121, 66828, 100242, 200484, 595883, 1191766, 1787649, 2383532, 3575298, 5362947, 7150596, 10725894, 21451788]

約数ペア:

[(1, 21451788), (2, 10725894), (3, 7150596), (4, 5362947), (6, 3575298), (9, 2383532), (12, 1787649), (18, 1191766), (36, 595883), (107, 200484), (214, 100242), (321, 66828), (428, 50121), (642, 33414), (963, 22276), (1284, 16707), (1926, 11138), (3852, 5569)]