20813935

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{739}}^1$

素因数の和:918

約数の個数: 16

約数和(自身を含む): 25787520

約数和(自身を除く): 4973585

約数列:

[1, 5, 43, 131, 215, 655, 739, 3695, 5633, 28165, 31777, 96809, 158885, 484045, 4162787, 20813935]

約数ペア:

[(1, 20813935), (5, 4162787), (43, 484045), (131, 158885), (215, 96809), (655, 31777), (739, 28165), (3695, 5633)]