21581469

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{2027}}^1$

素因数の和:2066

約数の個数: 36

約数和(自身を含む): 38596896

約数和(自身を除く): 17015427

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 169, 273, 507, 819, 1183, 1521, 2027, 3549, 6081, 10647, 14189, 18243, 26351, 42567, 79053, 127701, 184457, 237159, 342563, 553371, 1027689, 1660113, 2397941, 3083067, 7193823, 21581469]

約数ペア:

[(1, 21581469), (3, 7193823), (7, 3083067), (9, 2397941), (13, 1660113), (21, 1027689), (39, 553371), (63, 342563), (91, 237159), (117, 184457), (169, 127701), (273, 79053), (507, 42567), (819, 26351), (1183, 18243), (1521, 14189), (2027, 10647), (3549, 6081)]