16890237

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{503}}^1$

素因数の和:570

約数の個数: 48

約数和(自身を含む): 30820608

約数和(自身を除く): 13930371

約数列:

[1, 3, 7, 9, 13, 21, 39, 41, 63, 91, 117, 123, 273, 287, 369, 503, 533, 819, 861, 1509, 1599, 2583, 3521, 3731, 4527, 4797, 6539, 10563, 11193, 19617, 20623, 31689, 33579, 45773, 58851, 61869, 137319, 144361, 185607, 268099, 411957, 433083, 804297, 1299249, 1876693, 2412891, 5630079, 16890237]

約数ペア:

[(1, 16890237), (3, 5630079), (7, 2412891), (9, 1876693), (13, 1299249), (21, 804297), (39, 433083), (41, 411957), (63, 268099), (91, 185607), (117, 144361), (123, 137319), (273, 61869), (287, 58851), (369, 45773), (503, 33579), (533, 31689), (819, 20623), (861, 19617), (1509, 11193), (1599, 10563), (2583, 6539), (3521, 4797), (3731, 4527)]