21511953

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{46867}}^1$

素因数の和:46893

約数の個数: 16

約数和(自身を含む): 33744960

約数和(自身を除く): 12233007

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 46867, 140601, 421803, 796739, 1265409, 2390217, 7170651, 21511953]

約数ペア:

[(1, 21511953), (3, 7170651), (9, 2390217), (17, 1265409), (27, 796739), (51, 421803), (153, 140601), (459, 46867)]