19820857

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{2099}}^1$

素因数の和:2196

約数の個数: 16

約数和(自身を含む): 24192000

約数和(自身を除く): 4371143

約数列:

[1, 7, 19, 71, 133, 497, 1349, 2099, 9443, 14693, 39881, 149029, 279167, 1043203, 2831551, 19820857]

約数ペア:

[(1, 19820857), (7, 2831551), (19, 1043203), (71, 279167), (133, 149029), (497, 39881), (1349, 14693), (2099, 9443)]