20928411

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19541}}^1$

素因数の和:19571

約数の個数: 24

約数和(自身を含む): 36582624

約数和(自身を除く): 15654213

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19541, 58623, 136787, 175869, 332197, 410361, 996591, 1231083, 2325379, 2989773, 6976137, 20928411]

約数ペア:

[(1, 20928411), (3, 6976137), (7, 2989773), (9, 2325379), (17, 1231083), (21, 996591), (51, 410361), (63, 332197), (119, 175869), (153, 136787), (357, 58623), (1071, 19541)]