20578040

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10499}}^1$

素因数の和:10524

約数の個数: 48

約数和(自身を含む): 53865000

約数和(自身を除く): 33286960

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, 10499, 20998, 41996, 52495, 73493, 83992, 104990, 146986, 209980, 293972, 367465, 419960, 514451, 587944, 734930, 1028902, 1469860, 2057804, 2572255, 2939720, 4115608, 5144510, 10289020, 20578040]

約数ペア:

[(1, 20578040), (2, 10289020), (4, 5144510), (5, 4115608), (7, 2939720), (8, 2572255), (10, 2057804), (14, 1469860), (20, 1028902), (28, 734930), (35, 587944), (40, 514451), (49, 419960), (56, 367465), (70, 293972), (98, 209980), (140, 146986), (196, 104990), (245, 83992), (280, 73493), (392, 52495), (490, 41996), (980, 20998), (1960, 10499)]