21615237

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{11831}}^1$

素因数の和:11873

約数の個数: 24

約数和(自身を含む): 36915840

約数和(自身を除く): 15300603

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 11831, 35493, 82817, 106479, 248451, 343099, 745353, 1029297, 2401693, 3087891, 7205079, 21615237]

約数ペア:

[(1, 21615237), (3, 7205079), (7, 3087891), (9, 2401693), (21, 1029297), (29, 745353), (63, 343099), (87, 248451), (203, 106479), (261, 82817), (609, 35493), (1827, 11831)]