21325790

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{112241}}^1$

素因数の和:112267

約数の個数: 16

約数和(自身を含む): 40407120

約数和(自身を除く): 19081330

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 112241, 224482, 561205, 1122410, 2132579, 4265158, 10662895, 21325790]

約数ペア:

[(1, 21325790), (2, 10662895), (5, 4265158), (10, 2132579), (19, 1122410), (38, 561205), (95, 224482), (190, 112241)]