21202371

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{179}}^1$

素因数の和:336

約数の個数: 32

約数和(自身を含む): 32659200

約数和(自身を除く): 11456829

約数列:

[1, 3, 9, 27, 41, 107, 123, 179, 321, 369, 537, 963, 1107, 1611, 2889, 4387, 4833, 7339, 13161, 19153, 22017, 39483, 57459, 66051, 118449, 172377, 198153, 517131, 785273, 2355819, 7067457, 21202371]

約数ペア:

[(1, 21202371), (3, 7067457), (9, 2355819), (27, 785273), (41, 517131), (107, 198153), (123, 172377), (179, 118449), (321, 66051), (369, 57459), (537, 39483), (963, 22017), (1107, 19153), (1611, 13161), (2889, 7339), (4387, 4833)]