128270540

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{278849}}^1$

素因数の和:278881

約数の個数: 24

約数和(自身を含む): 281080800

約数和(自身を除く): 152810260

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 278849, 557698, 1115396, 1394245, 2788490, 5576980, 6413527, 12827054, 25654108, 32067635, 64135270, 128270540]

約数ペア:

[(1, 128270540), (2, 64135270), (4, 32067635), (5, 25654108), (10, 12827054), (20, 6413527), (23, 5576980), (46, 2788490), (92, 1394245), (115, 1115396), (230, 557698), (460, 278849)]