20478280

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{22259}}^1$

素因数の和:22293

約数の個数: 32

約数和(自身を含む): 48081600

約数和(自身を除く): 27603320

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 22259, 44518, 89036, 111295, 178072, 222590, 445180, 511957, 890360, 1023914, 2047828, 2559785, 4095656, 5119570, 10239140, 20478280]

約数ペア:

[(1, 20478280), (2, 10239140), (4, 5119570), (5, 4095656), (8, 2559785), (10, 2047828), (20, 1023914), (23, 890360), (40, 511957), (46, 445180), (92, 222590), (115, 178072), (184, 111295), (230, 89036), (460, 44518), (920, 22259)]