21223539

素因数分解:

$3^4\times {\mathrm{59}}^1\times {\mathrm{4441}}^1$

素因数の和:4512

約数の個数: 20

約数和(自身を含む): 32248920

約数和(自身を除く): 11025381

約数列:

[1, 3, 9, 27, 59, 81, 177, 531, 1593, 4441, 4779, 13323, 39969, 119907, 262019, 359721, 786057, 2358171, 7074513, 21223539]

約数ペア:

[(1, 21223539), (3, 7074513), (9, 2358171), (27, 786057), (59, 359721), (81, 262019), (177, 119907), (531, 39969), (1593, 13323), (4441, 4779)]