131021650

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{63913}}^1$

素因数の和:63966

約数の個数: 24

約数和(自身を含む): 249648084

約数和(自身を除く): 118626434

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 205, 410, 1025, 2050, 63913, 127826, 319565, 639130, 1597825, 2620433, 3195650, 5240866, 13102165, 26204330, 65510825, 131021650]

約数ペア:

[(1, 131021650), (2, 65510825), (5, 26204330), (10, 13102165), (25, 5240866), (41, 3195650), (50, 2620433), (82, 1597825), (205, 639130), (410, 319565), (1025, 127826), (2050, 63913)]