81720304

素因数分解:

$2^4\times {\mathrm{2251}}^1\times {\mathrm{2269}}^1$

素因数の和:4528

約数の個数: 20

約数和(自身を含む): 158473240

約数和(自身を除く): 76752936

約数列:

[1, 2, 4, 8, 16, 2251, 2269, 4502, 4538, 9004, 9076, 18008, 18152, 36016, 36304, 5107519, 10215038, 20430076, 40860152, 81720304]

約数ペア:

[(1, 81720304), (2, 40860152), (4, 20430076), (8, 10215038), (16, 5107519), (2251, 36304), (2269, 36016), (4502, 18152), (4538, 18008), (9004, 9076)]