21875139

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{739}}^1$

素因数の和:792

約数の個数: 48

約数和(自身を含む): 38787840

約数和(自身を除く): 16912701

約数列:

[1, 3, 9, 11, 13, 23, 33, 39, 69, 99, 117, 143, 207, 253, 299, 429, 739, 759, 897, 1287, 2217, 2277, 2691, 3289, 6651, 8129, 9607, 9867, 16997, 24387, 28821, 29601, 50991, 73161, 86463, 105677, 152973, 186967, 220961, 317031, 560901, 662883, 951093, 1682703, 1988649, 2430571, 7291713, 21875139]

約数ペア:

[(1, 21875139), (3, 7291713), (9, 2430571), (11, 1988649), (13, 1682703), (23, 951093), (33, 662883), (39, 560901), (69, 317031), (99, 220961), (117, 186967), (143, 152973), (207, 105677), (253, 86463), (299, 73161), (429, 50991), (739, 29601), (759, 28821), (897, 24387), (1287, 16997), (2217, 9867), (2277, 9607), (2691, 8129), (3289, 6651)]