21970953

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{317}}^1$

素因数の和:494

約数の個数: 32

約数和(自身を含む): 34801920

約数和(自身を除く): 12830967

約数列:

[1, 3, 9, 17, 27, 51, 151, 153, 317, 453, 459, 951, 1359, 2567, 2853, 4077, 5389, 7701, 8559, 16167, 23103, 47867, 48501, 69309, 143601, 145503, 430803, 813739, 1292409, 2441217, 7323651, 21970953]

約数ペア:

[(1, 21970953), (3, 7323651), (9, 2441217), (17, 1292409), (27, 813739), (51, 430803), (151, 145503), (153, 143601), (317, 69309), (453, 48501), (459, 47867), (951, 23103), (1359, 16167), (2567, 8559), (2853, 7701), (4077, 5389)]