21353907

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{1367}}^1$

素因数の和:1538

約数の個数: 16

約数和(自身を含む): 29417472

約数和(自身を除く): 8063565

約数列:

[1, 3, 41, 123, 127, 381, 1367, 4101, 5207, 15621, 56047, 168141, 173609, 520827, 7117969, 21353907]

約数ペア:

[(1, 21353907), (3, 7117969), (41, 520827), (123, 173609), (127, 168141), (381, 56047), (1367, 15621), (4101, 5207)]