199820780

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{337}}^1\times {\mathrm{1289}}^1$

素因数の和:1658

約数の個数: 48

約数和(自身を含む): 439508160

約数和(自身を除く): 239687380

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 337, 460, 674, 1289, 1348, 1685, 2578, 3370, 5156, 6445, 6740, 7751, 12890, 15502, 25780, 29647, 31004, 38755, 59294, 77510, 118588, 148235, 155020, 296470, 434393, 592940, 868786, 1737572, 2171965, 4343930, 8687860, 9991039, 19982078, 39964156, 49955195, 99910390, 199820780]

約数ペア:

[(1, 199820780), (2, 99910390), (4, 49955195), (5, 39964156), (10, 19982078), (20, 9991039), (23, 8687860), (46, 4343930), (92, 2171965), (115, 1737572), (230, 868786), (337, 592940), (460, 434393), (674, 296470), (1289, 155020), (1348, 148235), (1685, 118588), (2578, 77510), (3370, 59294), (5156, 38755), (6445, 31004), (6740, 29647), (7751, 25780), (12890, 15502)]