21867575

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{2423}}^1$

素因数の和:2471

約数の個数: 18

約数和(自身を含む): 28629864

約数和(自身を除く): 6762289

約数列:

[1, 5, 19, 25, 95, 361, 475, 1805, 2423, 9025, 12115, 46037, 60575, 230185, 874703, 1150925, 4373515, 21867575]

約数ペア:

[(1, 21867575), (5, 4373515), (19, 1150925), (25, 874703), (95, 230185), (361, 60575), (475, 46037), (1805, 12115), (2423, 9025)]