21257846

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{29443}}^1$

素因数の和:29483

約数の個数: 12

約数和(自身を含む): 33654492

約数和(自身を除く): 12396646

約数列:

[1, 2, 19, 38, 361, 722, 29443, 58886, 559417, 1118834, 10628923, 21257846]

約数ペア:

[(1, 21257846), (2, 10628923), (19, 1118834), (38, 559417), (361, 58886), (722, 29443)]