20199451209

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{50625191}}^1$

素因数の和:50625220

約数の個数: 16

約数和(自身を含む): 32400122880

約数和(自身を除く): 12200671671

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 50625191, 151875573, 354376337, 961878629, 1063129011, 2885635887, 6733150403, 20199451209]

約数ペア:

[(1, 20199451209), (3, 6733150403), (7, 2885635887), (19, 1063129011), (21, 961878629), (57, 354376337), (133, 151875573), (399, 50625191)]