21798491

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:227

約数の個数: 32

約数和(自身を含む): 27578880

約数和(自身を除く): 5780389

約数列:

[1, 11, 13, 19, 71, 113, 143, 209, 247, 781, 923, 1243, 1349, 1469, 2147, 2717, 8023, 10153, 14839, 16159, 17537, 23617, 27911, 88253, 104299, 152437, 192907, 307021, 1147289, 1676807, 1981681, 21798491]

約数ペア:

[(1, 21798491), (11, 1981681), (13, 1676807), (19, 1147289), (71, 307021), (113, 192907), (143, 152437), (209, 104299), (247, 88253), (781, 27911), (923, 23617), (1243, 17537), (1349, 16159), (1469, 14839), (2147, 10153), (2717, 8023)]