21000897

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{311}}^1$

素因数の和:422

約数の個数: 32

約数和(自身を含む): 32497920

約数和(自身を除く): 11497023

約数列:

[1, 3, 9, 27, 41, 61, 123, 183, 311, 369, 549, 933, 1107, 1647, 2501, 2799, 7503, 8397, 12751, 18971, 22509, 38253, 56913, 67527, 114759, 170739, 344277, 512217, 777811, 2333433, 7000299, 21000897]

約数ペア:

[(1, 21000897), (3, 7000299), (9, 2333433), (27, 777811), (41, 512217), (61, 344277), (123, 170739), (183, 114759), (311, 67527), (369, 56913), (549, 38253), (933, 22509), (1107, 18971), (1647, 12751), (2501, 8397), (2799, 7503)]