21125421

素因数分解:

$3^3\times {\mathrm{607}}^1\times {\mathrm{1289}}^1$

素因数の和:1905

約数の個数: 16

約数和(自身を含む): 31372800

約数和(自身を除く): 10247379

約数列:

[1, 3, 9, 27, 607, 1289, 1821, 3867, 5463, 11601, 16389, 34803, 782423, 2347269, 7041807, 21125421]

約数ペア:

[(1, 21125421), (3, 7041807), (9, 2347269), (27, 782423), (607, 34803), (1289, 16389), (1821, 11601), (3867, 5463)]