21232473

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{787}}^1$

素因数の和:853

約数の個数: 24

約数和(自身を含む): 31375008

約数和(自身を除く): 10142535

約数列:

[1, 3, 17, 23, 51, 69, 391, 529, 787, 1173, 1587, 2361, 8993, 13379, 18101, 26979, 40137, 54303, 307717, 416323, 923151, 1248969, 7077491, 21232473]

約数ペア:

[(1, 21232473), (3, 7077491), (17, 1248969), (23, 923151), (51, 416323), (69, 307717), (391, 54303), (529, 40137), (787, 26979), (1173, 18101), (1587, 13379), (2361, 8993)]