81779980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{95093}}^1$

素因数の和:95145

約数の個数: 24

約数和(自身を含む): 175733712

約数和(自身を除く): 93953732

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 95093, 190186, 380372, 475465, 950930, 1901860, 4088999, 8177998, 16355996, 20444995, 40889990, 81779980]

約数ペア:

[(1, 81779980), (2, 40889990), (4, 20444995), (5, 16355996), (10, 8177998), (20, 4088999), (43, 1901860), (86, 950930), (172, 475465), (215, 380372), (430, 190186), (860, 95093)]