128908521

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{107693}}^1$

素因数の和:107725

約数の個数: 24

約数和(自身を含む): 224003520

約数和(自身を除く): 95094999

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 107693, 323079, 753851, 969237, 2046167, 2261553, 6138501, 6784659, 14323169, 18415503, 42969507, 128908521]

約数ペア:

[(1, 128908521), (3, 42969507), (7, 18415503), (9, 14323169), (19, 6784659), (21, 6138501), (57, 2261553), (63, 2046167), (133, 969237), (171, 753851), (399, 323079), (1197, 107693)]