20953275

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{373}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 40068864

約数和(自身を除く): 19115589

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 107, 175, 321, 373, 525, 535, 749, 1119, 1605, 1865, 2247, 2611, 2675, 3745, 5595, 7833, 8025, 9325, 11235, 13055, 18725, 27975, 39165, 39911, 56175, 65275, 119733, 195825, 199555, 279377, 598665, 838131, 997775, 1396885, 2993325, 4190655, 6984425, 20953275]

約数ペア:

[(1, 20953275), (3, 6984425), (5, 4190655), (7, 2993325), (15, 1396885), (21, 997775), (25, 838131), (35, 598665), (75, 279377), (105, 199555), (107, 195825), (175, 119733), (321, 65275), (373, 56175), (525, 39911), (535, 39165), (749, 27975), (1119, 18725), (1605, 13055), (1865, 11235), (2247, 9325), (2611, 8025), (2675, 7833), (3745, 5595)]