20217355

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{1061}}^1$

素因数の和:1206

約数の個数: 16

約数和(自身を含む): 25182144

約数和(自身を除く): 4964789

約数列:

[1, 5, 37, 103, 185, 515, 1061, 3811, 5305, 19055, 39257, 109283, 196285, 546415, 4043471, 20217355]

約数ペア:

[(1, 20217355), (5, 4043471), (37, 546415), (103, 196285), (185, 109283), (515, 39257), (1061, 19055), (3811, 5305)]