19885983

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{13781}}^1$

素因数の和:13834

約数の個数: 16

約数和(自身を含む): 29328096

約数和(自身を除く): 9442113

約数列:

[1, 3, 13, 37, 39, 111, 481, 1443, 13781, 41343, 179153, 509897, 537459, 1529691, 6628661, 19885983]

約数ペア:

[(1, 19885983), (3, 6628661), (13, 1529691), (37, 537459), (39, 509897), (111, 179153), (481, 41343), (1443, 13781)]