256220920

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{278501}}^1$

素因数の和:278535

約数の個数: 32

約数和(自身を含む): 601564320

約数和(自身を除く): 345343400

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 278501, 557002, 1114004, 1392505, 2228008, 2785010, 5570020, 6405523, 11140040, 12811046, 25622092, 32027615, 51244184, 64055230, 128110460, 256220920]

約数ペア:

[(1, 256220920), (2, 128110460), (4, 64055230), (5, 51244184), (8, 32027615), (10, 25622092), (20, 12811046), (23, 11140040), (40, 6405523), (46, 5570020), (92, 2785010), (115, 2228008), (184, 1392505), (230, 1114004), (460, 557002), (920, 278501)]