21256402

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{59}}^1\times {\mathrm{499}}^1$

素因数の和:598

約数の個数: 24

約数和(自身を含む): 34290000

約数和(自身を除く): 13033598

約数列:

[1, 2, 19, 38, 59, 118, 361, 499, 722, 998, 1121, 2242, 9481, 18962, 21299, 29441, 42598, 58882, 180139, 360278, 559379, 1118758, 10628201, 21256402]

約数ペア:

[(1, 21256402), (2, 10628201), (19, 1118758), (38, 559379), (59, 360278), (118, 180139), (361, 58882), (499, 42598), (722, 29441), (998, 21299), (1121, 18962), (2242, 9481)]