21274788

素因数分解:

$2^2\times 3^1\times {\mathrm{991}}^1\times {\mathrm{1789}}^1$

素因数の和:2787

約数の個数: 24

約数和(自身を含む): 49719040

約数和(自身を除く): 28444252

約数列:

[1, 2, 3, 4, 6, 12, 991, 1789, 1982, 2973, 3578, 3964, 5367, 5946, 7156, 10734, 11892, 21468, 1772899, 3545798, 5318697, 7091596, 10637394, 21274788]

約数ペア:

[(1, 21274788), (2, 10637394), (3, 7091596), (4, 5318697), (6, 3545798), (12, 1772899), (991, 21468), (1789, 11892), (1982, 10734), (2973, 7156), (3578, 5946), (3964, 5367)]