20557335

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4243}}^1$

素因数の和:4287

約数の個数: 32

約数和(自身を含む): 36668160

約数和(自身を除く): 16110825

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615, 4243, 4845, 12729, 21215, 63645, 72131, 80617, 216393, 241851, 360655, 403085, 1081965, 1209255, 1370489, 4111467, 6852445, 20557335]

約数ペア:

[(1, 20557335), (3, 6852445), (5, 4111467), (15, 1370489), (17, 1209255), (19, 1081965), (51, 403085), (57, 360655), (85, 241851), (95, 216393), (255, 80617), (285, 72131), (323, 63645), (969, 21215), (1615, 12729), (4243, 4845)]