20939445

素因数分解:

$3^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1423}}^1$

素因数の和:1546

約数の個数: 32

約数和(自身を含む): 37593600

約数和(自身を除く): 16654155

約数列:

[1, 3, 5, 9, 15, 27, 45, 109, 135, 327, 545, 981, 1423, 1635, 2943, 4269, 4905, 7115, 12807, 14715, 21345, 38421, 64035, 155107, 192105, 465321, 775535, 1395963, 2326605, 4187889, 6979815, 20939445]

約数ペア:

[(1, 20939445), (3, 6979815), (5, 4187889), (9, 2326605), (15, 1395963), (27, 775535), (45, 465321), (109, 192105), (135, 155107), (327, 64035), (545, 38421), (981, 21345), (1423, 14715), (1635, 12807), (2943, 7115), (4269, 4905)]