221639891

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{41}}^1\times {\mathrm{929}}^1$

素因数の和:1027

約数の個数: 24

約数和(自身を含む): 259202160

約数和(自身を除く): 37562269

約数列:

[1, 11, 23, 41, 253, 451, 529, 929, 943, 5819, 10219, 10373, 21367, 21689, 38089, 235037, 238579, 418979, 491441, 876047, 5405851, 9636517, 20149081, 221639891]

約数ペア:

[(1, 221639891), (11, 20149081), (23, 9636517), (41, 5405851), (253, 876047), (451, 491441), (529, 418979), (929, 238579), (943, 235037), (5819, 38089), (10219, 21689), (10373, 21367)]