19212021

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{283}}^1\times {\mathrm{397}}^1$

素因数の和:705

約数の個数: 24

約数和(自身を含む): 29388320

約数和(自身を除く): 10176299

約数列:

[1, 3, 9, 19, 57, 171, 283, 397, 849, 1191, 2547, 3573, 5377, 7543, 16131, 22629, 48393, 67887, 112351, 337053, 1011159, 2134669, 6404007, 19212021]

約数ペア:

[(1, 19212021), (3, 6404007), (9, 2134669), (19, 1011159), (57, 337053), (171, 112351), (283, 67887), (397, 48393), (849, 22629), (1191, 16131), (2547, 7543), (3573, 5377)]