19201865

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^2\times {\mathrm{67}}^1$

素因数の和:189

約数の個数: 24

約数和(自身を含む): 24715008

約数和(自身を除く): 5513143

約数列:

[1, 5, 31, 43, 67, 155, 215, 335, 1333, 1849, 2077, 2881, 6665, 9245, 10385, 14405, 57319, 89311, 123883, 286595, 446555, 619415, 3840373, 19201865]

約数ペア:

[(1, 19201865), (5, 3840373), (31, 619415), (43, 446555), (67, 286595), (155, 123883), (215, 89311), (335, 57319), (1333, 14405), (1849, 10385), (2077, 9245), (2881, 6665)]