638966068

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{285763}}^1$

素因数の和:285823

約数の個数: 24

約数和(自身を含む): 1232214368

約数和(自身を除く): 593248300

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 172, 559, 1118, 2236, 285763, 571526, 1143052, 3714919, 7429838, 12287809, 14859676, 24575618, 49151236, 159741517, 319483034, 638966068]

約数ペア:

[(1, 638966068), (2, 319483034), (4, 159741517), (13, 49151236), (26, 24575618), (43, 14859676), (52, 12287809), (86, 7429838), (172, 3714919), (559, 1143052), (1118, 571526), (2236, 285763)]