20853237

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 31059072

約数和(自身を除く): 10205835

約数列:

[1, 3, 17, 37, 43, 51, 111, 129, 257, 629, 731, 771, 1591, 1887, 2193, 4369, 4773, 9509, 11051, 13107, 27047, 28527, 33153, 81141, 161653, 187867, 408887, 484959, 563601, 1226661, 6951079, 20853237]

約数ペア:

[(1, 20853237), (3, 6951079), (17, 1226661), (37, 563601), (43, 484959), (51, 408887), (111, 187867), (129, 161653), (257, 81141), (629, 33153), (731, 28527), (771, 27047), (1591, 13107), (1887, 11051), (2193, 9509), (4369, 4773)]