21171381

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13093}}^1$

素因数の和:13121

約数の個数: 24

約数和(自身を含む): 35825184

約数和(自身を除く): 14653803

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 13093, 39279, 91651, 144023, 274953, 432069, 641557, 1008161, 1924671, 3024483, 7057127, 21171381]

約数ペア:

[(1, 21171381), (3, 7057127), (7, 3024483), (11, 1924671), (21, 1008161), (33, 641557), (49, 432069), (77, 274953), (147, 144023), (231, 91651), (539, 39279), (1617, 13093)]