21081393

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{1091}}^1$

素因数の和:1229

約数の個数: 24

約数和(自身を含む): 32366880

約数和(自身を除く): 11285487

約数列:

[1, 3, 9, 19, 57, 113, 171, 339, 1017, 1091, 2147, 3273, 6441, 9819, 19323, 20729, 62187, 123283, 186561, 369849, 1109547, 2342377, 7027131, 21081393]

約数ペア:

[(1, 21081393), (3, 7027131), (9, 2342377), (19, 1109547), (57, 369849), (113, 186561), (171, 123283), (339, 62187), (1017, 20729), (1091, 19323), (2147, 9819), (3273, 6441)]