19421165

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{877}}^1$

素因数の和:1028

約数の個数: 16

約数和(自身を含む): 24106368

約数和(自身を除く): 4685203

約数列:

[1, 5, 43, 103, 215, 515, 877, 4385, 4429, 22145, 37711, 90331, 188555, 451655, 3884233, 19421165]

約数ペア:

[(1, 19421165), (5, 3884233), (43, 451655), (103, 188555), (215, 90331), (515, 37711), (877, 22145), (4385, 4429)]