21283353

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{1999}}^1$

素因数の和:2038

約数の個数: 36

約数和(自身を含む): 38064000

約数和(自身を除く): 16780647

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 169, 273, 507, 819, 1183, 1521, 1999, 3549, 5997, 10647, 13993, 17991, 25987, 41979, 77961, 125937, 181909, 233883, 337831, 545727, 1013493, 1637181, 2364817, 3040479, 7094451, 21283353]

約数ペア:

[(1, 21283353), (3, 7094451), (7, 3040479), (9, 2364817), (13, 1637181), (21, 1013493), (39, 545727), (63, 337831), (91, 233883), (117, 181909), (169, 125937), (273, 77961), (507, 41979), (819, 25987), (1183, 17991), (1521, 13993), (1999, 10647), (3549, 5997)]