21000746721

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{900817}}^1$

素因数の和:901248

約数の個数: 16

約数和(自身を含む): 29546830400

約数和(自身を除く): 8546083679

約数列:

[1, 3, 19, 57, 409, 1227, 7771, 23313, 900817, 2702451, 17115523, 51346569, 368434153, 1105302459, 7000248907, 21000746721]

約数ペア:

[(1, 21000746721), (3, 7000248907), (19, 1105302459), (57, 368434153), (409, 51346569), (1227, 17115523), (7771, 2702451), (23313, 900817)]