20382040

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10399}}^1$

素因数の和:10424

約数の個数: 48

約数和(自身を含む): 53352000

約数和(自身を除く): 32969960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10399, 20798, 41596, 51995, 72793, 83192, 103990, 145586, 207980, 291172, 363965, 415960, 509551, 582344, 727930, 1019102, 1455860, 2038204, 2547755, 2911720, 4076408, 5095510, 10191020, 20382040]

約数ペア:

[(1, 20382040), (2, 10191020), (4, 5095510), (5, 4076408), (7, 2911720), (8, 2547755), (10, 2038204), (14, 1455860), (20, 1019102), (28, 727930), (35, 582344), (40, 509551), (49, 415960), (56, 363965), (70, 291172), (98, 207980), (140, 145586), (196, 103990), (245, 83192), (280, 72793), (392, 51995), (490, 41596), (980, 20798), (1960, 10399)]