21586743

素因数分解:

$3^4\times {\mathrm{59}}^1\times {\mathrm{4517}}^1$

素因数の和:4588

約数の個数: 20

約数和(自身を含む): 32800680

約数和(自身を除く): 11213937

約数列:

[1, 3, 9, 27, 59, 81, 177, 531, 1593, 4517, 4779, 13551, 40653, 121959, 266503, 365877, 799509, 2398527, 7195581, 21586743]

約数ペア:

[(1, 21586743), (3, 7195581), (9, 2398527), (27, 799509), (59, 365877), (81, 266503), (177, 121959), (531, 40653), (1593, 13551), (4517, 4779)]