128778820

素因数分解:

$2^2\times 5^1\times {\mathrm{463}}^1\times {\mathrm{13907}}^1$

素因数の和:14379

約数の個数: 24

約数和(自身を含む): 271039104

約数和(自身を除く): 142260284

約数列:

[1, 2, 4, 5, 10, 20, 463, 926, 1852, 2315, 4630, 9260, 13907, 27814, 55628, 69535, 139070, 278140, 6438941, 12877882, 25755764, 32194705, 64389410, 128778820]

約数ペア:

[(1, 128778820), (2, 64389410), (4, 32194705), (5, 25755764), (10, 12877882), (20, 6438941), (463, 278140), (926, 139070), (1852, 69535), (2315, 55628), (4630, 27814), (9260, 13907)]