21000891309

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{2903}}^1\times {\mathrm{65173}}^1$

素因数の和:68116

約数の個数: 16

約数和(自身を含む): 28768324992

約数和(自身を除く): 7767433683

約数列:

[1, 3, 37, 111, 2903, 8709, 65173, 107411, 195519, 322233, 2411401, 7234203, 189197219, 567591657, 7000297103, 21000891309]

約数ペア:

[(1, 21000891309), (3, 7000297103), (37, 567591657), (111, 189197219), (2903, 7234203), (8709, 2411401), (65173, 322233), (107411, 195519)]