20873787

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:295

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 10644933

約数列:

[1, 3, 11, 33, 59, 71, 151, 177, 213, 453, 649, 781, 1661, 1947, 2343, 4189, 4983, 8909, 10721, 12567, 26727, 32163, 46079, 97999, 117931, 138237, 293997, 353793, 632539, 1897617, 6957929, 20873787]

約数ペア:

[(1, 20873787), (3, 6957929), (11, 1897617), (33, 632539), (59, 353793), (71, 293997), (151, 138237), (177, 117931), (213, 97999), (453, 46079), (649, 32163), (781, 26727), (1661, 12567), (1947, 10721), (2343, 8909), (4189, 4983)]