20004405

素因数分解:

$3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{10501}}^1$

素因数の和:10636

約数の個数: 16

約数和(自身を含む): 32262144

約数和(自身を除く): 12257739

約数列:

[1, 3, 5, 15, 127, 381, 635, 1905, 10501, 31503, 52505, 157515, 1333627, 4000881, 6668135, 20004405]

約数ペア:

[(1, 20004405), (3, 6668135), (5, 4000881), (15, 1333627), (127, 157515), (381, 52505), (635, 31503), (1905, 10501)]