20439684

素因数分解:

$2^2\times 3^2\times {\mathrm{643}}^1\times {\mathrm{883}}^1$

素因数の和:1536

約数の個数: 36

約数和(自身を含む): 51805936

約数和(自身を除く): 31366252

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 643, 883, 1286, 1766, 1929, 2572, 2649, 3532, 3858, 5298, 5787, 7716, 7947, 10596, 11574, 15894, 23148, 31788, 567769, 1135538, 1703307, 2271076, 3406614, 5109921, 6813228, 10219842, 20439684]

約数ペア:

[(1, 20439684), (2, 10219842), (3, 6813228), (4, 5109921), (6, 3406614), (9, 2271076), (12, 1703307), (18, 1135538), (36, 567769), (643, 31788), (883, 23148), (1286, 15894), (1766, 11574), (1929, 10596), (2572, 7947), (2649, 7716), (3532, 5787), (3858, 5298)]